Incumbents defeated in state legislative elections, 2020

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Last updated on April 25, 2025

There were 5,875 state legislative seats up for election on November 3, 2020, in 44 states. This page analyzes incumbents defeated in those elections. An incumbent may be defeated at two points in an election cycle: during a primary and during a general election.

In 2020, 382 incumbents lost their re-election bids: 225 in general elections and 157 in primaries. This was less than 2018 (484) but more than 2016 (362).

On this page, you will find:

• Incumbents defeated in general elections
• Incumbents defeated in primaries
• State-by-state breakdowns

Incumbents defeated in general elections

In state legislative general elections, 225 incumbents lost to challengers, 4.7% of incumbents running for re-election. This was the smallest number of incumbents defeated in even-year state legislative general elections since Ballotpedia began gathering data in 2010.

In 2020 general elections:

165 Democratic incumbents lost, 7.0% of the 2,345 Democratic incumbents who ran and 10.5% of the 1,568 contested Democratic incumbents.

51 Republican incumbents lost, 2.1% of the 2,465 Republican incumbents who ran and 3.0% of the 1,721 contested Republican incumbents.

Nine minor party or independent incumbents lost, 40.9% of the 22 minor party or independent incumbents who ran and 47.4% of the 19 contested minor party or independent incumbents.

The total number of incumbents defeated in general elections—225—was a 29% decrease from 2018 (318).

In 2020

Click [show] on the table below to view general election incumbent defeat statistics by state in 2020. Hover over column headings to learn more about their contents.

State legislative incumbents defeated in general elections, 2020
State
	Democratic			Republican			Total
	Filed	Def.	%	Filed	Def.	%	Filed	Def.	%
Nationwide	2,345	165	7.0%	2,465	51	2.1%	4,832	225	4.7%
Alaska	17	0	0.0%	20	2	10.0%	39	2	5.1%
Arizona	37	1	2.7%	33	2	6.1%	70	3	4.3%
Arkansas	26	4	15.4%	78	1	1.3%	104	5	4.8%
California	65	0	0.0%	18	2	11.1%	84	2	2.4%
Colorado	41	1	2.4%	22	1	4.5%	63	2	3.2%
Connecticut	106	2	1.9%	64	6	9.4%	170	8	4.7%
Delaware	26	0	0.0%	20	2	10.0%	46	2	4.3%
Florida	36	4	11.1%	60	0	0.0%	96	4	4.2%
Georgia	84	1	1.2%	121	4	3.3%	205	5	2.4%
Hawaii	49	0	0.0%	5	0	0.0%	54	0	0.0%
Idaho	16	2	12.5%	67	0	0.0%	83	2	2.4%
Illinois	84	4	4.8%	38	3	7.9%	122	7	5.7%
Indiana	35	5	14.3%	80	2	2.5%	115	7	6.1%
Iowa	49	7	14.3%	57	0	0.0%	106	7	6.6%
Kansas	42	4	9.5%	86	1	1.2%	128	5	3.9%
Kentucky	35	7	20.0%	64	0	0.0%	99	7	7.1%
Maine	79	8	10.1%	58	1	1.7%	142	11	7.7%
Massachusetts	149	0	0.0%	33	2	6.1%	183	2	1.1%
Michigan	39	2	5.1%	45	0	0.0%	84	2	2.4%
Minnesota	86	7	8.1%	87	2	2.3%	173	9	5.2%
Missouri	35	0	0.0%	85	1	1.2%	120	1	0.8%
Montana	31	6	19.4%	47	0	0.0%	78	6	7.7%
Nebraska	7	1	14.3%	12	1	8.3%	19	2	10.5%
Nevada	25	3	12.0%	13	0	0.0%	38	3	7.9%
New Hampshire	205	36	17.6%	128	1	0.8%	333	37	11.1%
New Mexico	61	2	3.3%	33	2	6.1%	94	4	4.3%
New York	126	3	2.4%	46	1	2.2%	174	5	2.9%
North Carolina	69	6	8.7%	75	2	2.7%	144	8	5.6%
North Dakota	7	3	42.9%	54	0	0.0%	61	3	4.9%
Ohio	35	3	8.6%	56	1	1.8%	91	4	4.4%
Oklahoma	22	4	18.2%	85	0	0.0%	107	4	3.7%
Oregon	34	0	0.0%	26	1	3.8%	60	1	1.7%
Pennsylvania	89	4	4.5%	113	1	0.9%	202	5	2.5%
Rhode Island	80	2	2.5%	13	0	0.0%	94	3	3.2%
South Carolina	59	5	8.5%	95	0	0.0%	154	5	3.2%
South Dakota	13	4	30.8%	59	0	0.0%	72	4	5.6%
Tennessee	25	0	0.0%	79	1	1.3%	105	2	1.9%
Texas	68	1	1.5%	83	2	2.4%	151	3	2.0%
Utah	15	0	0.0%	59	1	1.7%	74	1	1.4%
Vermont	104	5	4.8%	44	1	2.3%	156	10	6.4%
Washington	62	3	4.8%	45	2	4.4%	107	5	4.7%
West Virginia	33	11	33.3%	51	0	0.0%	84	11	13.1%
Wisconsin	32	1	3.1%	62	2	3.2%	94	3	3.2%
Wyoming	7	3	42.9%	46	0	0.0%	54	3	5.6%

Historical comparison

The chart below shows a partisan breakdown of incumbents defeated in general elections from 2010 to 2020.

Click [show] on the table below to view general election incumbent defeat statistics by state from 2010 to 2020. Hover over column headings to learn more about their contents.

State legislative incumbents defeated in general elections, 2010-2020
State
	2010		2012		2014		2016		2018		2020
	Def.	%	Def.	%	Def.	%	Def.	%	Def.	%	Def.	%
Nationwide	495	10.2%	287	6.3%	251	5.1%	237	5.0%	318	6.8%	225	4.7%
Alabama	22	19.5%	-	-	4	3.6%	-	-	1	1.0%	-	-
Alaska	3	6.7%	9	17.3%	1	2.2%	2	5.6%	3	8.3%	2	5.1%
Arizona	6	12.8%	4	7.0%	2	3.1%	4	6.7%	3	5.6%	3	4.3%
Arkansas	6	9.5%	6	7.1%	10	12.0%	6	6.1%	5	5.5%	5	4.8%
California	0	0.0%	3	5.4%	4	6.0%	5	6.8%	5	5.7%	2	2.4%
Colorado	7	10.9%	4	7.8%	6	10.2%	4	7.0%	4	7.5%	2	3.2%
Connecticut	13	7.8%	4	2.5%	10	6.2%	10	6.2%	15	9.3%	8	4.7%
Delaware	3	6.4%	3	6.0%	2	4.3%	1	2.0%	2	5.6%	2	4.3%
Florida	5	5.3%	5	4.7%	5	4.1%	3	3.1%	6	6.1%	4	4.2%
Georgia	3	1.6%	3	1.5%	0	0.0%	4	1.9%	10	4.8%	5	2.4%
Hawaii	1	1.8%	3	4.5%	0	0.0%	2	3.3%	0	0.0%	0	0.0%
Idaho	2	2.2%	2	3.0%	2	2.3%	2	2.2%	5	6.0%	2	2.4%
Illinois	7	5.6%	5	3.6%	1	0.8%	6	4.2%	10	7.7%	7	5.7%
Indiana	10	9.0%	5	4.9%	6	5.2%	1	1.0%	4	3.7%	7	6.1%
Iowa	18	17.1%	8	8.3%	5	4.6%	7	6.4%	7	6.9%	7	6.6%
Kansas	13	11.8%	14	13.1%	3	2.8%	11	9.4%	8	7.6%	5	3.9%
Kentucky	8	7.3%	4	3.8%	4	3.8%	18	16.8%	9	9.6%	7	7.1%
Maine	20	14.4%	17	14.0%	13	10.2%	13	8.8%	11	8.7%	11	7.7%
Maryland	3	2.0%	-	-	7	5.6%	-	-	8	5.9%	-	-
Massachusetts	10	6.1%	2	1.1%	3	1.7%	0	0.0%	3	1.7%	2	1.1%
Michigan	9	13.2%	5	5.7%	2	2.1%	1	1.5%	3	4.0%	2	2.4%
Minnesota	34	19.4%	16	10.5%	11	9.2%	11	6.5%	15	13.6%	9	5.2%
Missouri	12	11.8%	6	5.1%	5	3.4%	1	0.7%	3	2.6%	1	0.8%
Montana	10	13.7%	8	10.1%	6	7.9%	5	6.5%	3	3.4%	6	7.7%
Nebraska	2	9.5%	1	6.3%	0	0.0%	5	38.5%	3	18.8%	2	10.5%
Nevada	2	8.0%	1	2.9%	7	16.3%	7	17.9%	2	5.4%	3	7.9%
New Hampshire	88	28.3%	78	26.6%	46	15.1%	23	7.7%	52	17.2%	37	11.1%
New Mexico	7	10.8%	8	9.4%	6	10.3%	8	7.8%	7	12.1%	4	4.3%
New York	11	6.0%	4	2.1%	4	2.1%	2	1.1%	11	5.9%	5	2.9%
North Carolina	20	13.7%	6	5.1%	5	3.2%	6	3.9%	16	11.0%	8	5.6%
North Dakota	12	21.1%	6	10.5%	3	5.1%	17	32.7%	4	6.8%	3	4.9%
Ohio	13	15.1%	2	2.0%	3	3.5%	1	1.1%	1	1.4%	4	4.4%
Oklahoma	6	5.9%	0	0.0%	1	1.1%	0	0.0%	3	4.3%	4	3.7%
Oregon	4	5.9%	4	6.3%	2	3.4%	0	0.0%	3	4.7%	1	1.7%
Pennsylvania	9	4.3%	1	0.5%	4	2.0%	6	2.9%	12	6.3%	5	2.5%
Rhode Island	4	4.5%	4	4.3%	7	6.9%	2	2.0%	4	4.2%	3	3.2%
South Carolina	3	2.8%	2	1.4%	1	0.9%	0	0.0%	3	2.7%	5	3.2%
South Dakota	9	13.0%	4	6.1%	3	4.1%	2	3.3%	4	5.3%	4	5.6%
Tennessee	13	12.5%	2	2.3%	2	2.1%	2	1.9%	1	1.2%	2	1.9%
Texas	21	13.9%	3	2.2%	2	1.4%	5	3.5%	10	7.0%	3	2.0%
Utah	6	7.6%	2	2.9%	1	1.4%	2	2.6%	1	1.5%	1	1.4%
Vermont	6	3.8%	6	3.9%	11	7.2%	10	6.6%	10	6.9%	10	6.4%
Washington	9	8.8%	3	3.1%	4	3.6%	3	2.9%	9	8.7%	5	4.7%
West Virginia	5	5.1%	8	8.3%	23	23.5%	14	15.6%	14	14.9%	11	13.1%
Wisconsin	13	14.1%	5	5.4%	3	3.4%	2	2.0%	1	1.0%	3	3.2%
Wyoming	7	11.7%	1	1.8%	1	1.7%	3	5.7%	4	6.5%	3	5.6%

Incumbents defeated in primaries

In state legislative primaries, 157 incumbents lost to challengers, 3.1% of incumbents running for re-election. This was a decrease from 2018 (166) but an increase from 2016 (125).

In 2020 primaries:

63 Democratic incumbents lost, 2.6% of the 2,415 Democratic incumbents who ran and 12.8% of the 494 contested Democratic incumbents.

94 Republican incumbents lost, 3.7% of the 2,562 Republican incumbents who ran and 18.4% of the 511 contested Republican incumbents.

The total number of incumbents defeated in primaries—157—was a 5% decrease from 2018 (166).

In 2020

Click [show] on the table below to view primary incumbent defeat statistics by state in 2020. Hover over column headings to learn more about their contents.

State legislative incumbents defeated in primaries, 2020
State
	Democratic			Republican			Total
	Filed	Def.	%	Filed	Def.	%	Filed	Def.	%
Nationwide	2,415	63	2.6%	2,562	94	3.7%	4,999	157	3.1%
Alaska	17	0	0.0%	28	8	28.6%	47	8	17.0%
Arizona	37	0	0.0%	36	3	8.3%	73	3	4.1%
Arkansas	27	0	0.0%	80	2	2.5%	107	2	1.9%
California	65	0	0.0%	20	2	10.0%	86	2	2.3%
Colorado	41	0	0.0%	22	0	0.0%	63	0	0.0%
Connecticut	106	0	0.0%	64	0	0.0%	170	0	0.0%
Delaware	30	4	13.3%	20	0	0.0%	50	4	8.0%
Florida	38	2	5.3%	62	1	1.6%	100	3	3.0%
Georgia	89	4	4.5%	121	1	0.8%	210	5	2.4%
Hawaii	51	2	3.9%	5	0	0.0%	56	2	3.6%
Idaho	16	0	0.0%	71	5	7.0%	87	5	5.7%
Illinois	84	2	2.4%	38	0	0.0%	122	2	1.6%
Indiana	34	0	0.0%	81	1	1.2%	115	1	0.9%
Iowa	51	1	2.0%	57	0	0.0%	108	1	0.9%
Kansas	43	1	2.3%	99	12	12.1%	142	13	9.2%
Kentucky	35	0	0.0%	67	3	4.5%	102	3	2.9%
Maine	82	0	0.0%	61	1	1.6%	148	1	0.7%
Massachusetts	151	2	1.3%	33	0	0.0%	185	2	1.1%
Michigan	39	0	0.0%	45	0	0.0%	84	0	0.0%
Minnesota	95	4	4.2%	87	0	0.0%	182	4	2.2%
Missouri	36	1	2.8%	87	0	0.0%	123	1	0.8%
Montana	31	0	0.0%	53	6	11.3%	84	6	7.1%
Nebraska	7	0	0.0%	12	0	0.0%	19	0	0.0%
Nevada	25	0	0.0%	14	1	7.1%	39	1	2.6%
New Hampshire	209	4	1.9%	135	7	5.2%	344	11	3.2%
New Mexico	65	5	7.7%	36	2	5.6%	101	7	6.9%
New York	132	6	4.5%	46	0	0.0%	180	6	3.3%
North Carolina	69	1	1.4%	75	1	1.3%	144	2	1.4%
North Dakota	7	0	0.0%	56	2	3.6%	63	2	3.2%
Ohio	35	0	0.0%	57	1	1.8%	92	1	1.1%
Oklahoma	23	1	4.3%	91	6	6.6%	114	7	6.1%
Oregon	34	0	0.0%	26	0	0.0%	60	0	0.0%
Pennsylvania	96	6	6.3%	113	0	0.0%	209	6	2.9%
Rhode Island	90	10	11.1%	13	0	0.0%	104	10	9.6%
South Carolina	59	1	1.7%	97	1	1.0%	156	2	1.3%
South Dakota	14	0	0.0%	62	4	6.5%	76	4	5.3%
Tennessee	26	1	3.8%	82	3	3.7%	109	4	3.7%
Texas	70	2	2.9%	85	2	2.4%	155	4	2.6%
Utah	15	0	0.0%	62	3	4.8%	77	3	3.9%
Vermont	106	2	1.9%	44	0	0.0%	158	2	1.3%
Washington	62	0	0.0%	45	0	0.0%	107	0	0.0%
West Virginia	33	0	0.0%	60	10	16.7%	93	10	10.8%
Wisconsin	33	1	3.0%	62	0	0.0%	95	1	1.1%
Wyoming	7	0	0.0%	52	6	11.5%	60	6	10.0%

Historical comparison

The chart below shows a partisan breakdown of incumbents defeated in primaries from 2010 to 2020.

Click [show] on the table below to view primary incumbent defeat statistics by state from 2010 to 2020. Hover over column headings to learn more about their contents.

State legislative incumbents defeated in primaries, 2010-2020
State
	2010		2012		2014		2016		2018		2020
	Def.	%	Def.	%	Def.	%	Def.	%	Def.	%	Def.	%
Nationwide	116	2.3%	197	4.1%	131	2.6%	125	2.6%	166	3.4%	157	3.1%
Alabama	6	5.0%	-	-	8	6.7%	-	-	2	2.0%	-	-
Alaska	0	0.0%	2	3.7%	2	4.3%	5	12.2%	1	2.7%	8	17.0%
Arizona	4	7.8%	3	5.0%	2	3.0%	4	6.3%	3	5.3%	3	4.1%
Arkansas	1	1.6%	2	2.3%	4	4.6%	2	2.0%	3	3.2%	2	1.9%
California	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%	2	2.3%
Colorado	0	0.0%	2	3.8%	0	0.0%	2	3.4%	2	3.5%	0	0.0%
Connecticut	1	0.6%	4	2.5%	2	1.2%	2	1.2%	2	1.2%	0	0.0%
Delaware	1	2.1%	3	5.7%	2	4.1%	0	0.0%	1	2.7%	4	8.0%
Florida	1	1.0%	3	2.7%	1	0.8%	0	0.0%	2	2.0%	3	3.0%
Georgia	5	2.5%	12	5.7%	7	3.2%	5	2.3%	9	4.2%	5	2.4%
Hawaii	1	1.7%	5	7.0%	3	5.2%	1	1.6%	3	5.6%	2	3.6%
Idaho	6	6.3%	3	4.3%	6	6.4%	7	7.3%	6	6.7%	5	5.7%
Illinois	1	0.8%	6	4.1%	3	2.4%	1	0.7%	3	2.3%	2	1.6%
Indiana	2	1.8%	0	0.0%	3	2.6%	2	1.9%	2	1.8%	1	0.9%
Iowa	2	1.9%	3	3.0%	0	0.0%	1	0.9%	0	0.0%	1	0.9%
Kansas	5	4.3%	20	15.7%	3	2.7%	15	11.4%	7	6.3%	13	9.2%
Kentucky	2	1.8%	1	0.9%	2	1.9%	2	1.8%	4	4.1%	3	2.9%
Maine	1	0.7%	0	0.0%	0	0.0%	1	0.7%	0	0.0%	1	0.7%
Maryland	11	6.8%	-	-	12	8.7%	-	-	13	8.7%	-	-
Massachusetts	1	0.6%	4	2.1%	1	0.6%	2	1.1%	3	1.7%	2	1.1%
Michigan	0	0.0%	5	5.4%	1	1.0%	0	0.0%	3	3.8%	0	0.0%
Minnesota	2	1.1%	1	0.6%	0	0.0%	4	2.3%	1	0.9%	4	2.2%
Missouri	3	2.9%	8	6.3%	0	0.0%	4	2.8%	1	0.9%	1	0.8%
Montana	2	2.7%	4	4.9%	2	2.5%	2	2.5%	1	1.1%	6	7.1%
Nebraska	0	0.0%	0	0.0%	0	0.0%	1	7.1%	0	0.0%	0	0.0%
Nevada	1	3.8%	2	5.6%	0	0.0%	2	4.9%	1	2.6%	1	2.6%
New Hampshire	11	3.4%	22	7.0%	9	2.9%	10	3.3%	17	5.3%	11	3.2%
New Mexico	2	3.0%	5	5.5%	2	3.4%	1	1.0%	3	4.9%	7	6.9%
New York	4	2.1%	2	1.1%	2	1.0%	3	1.5%	10	5.1%	6	3.3%
North Carolina	5	3.3%	7	5.5%	4	2.6%	2	1.3%	8	5.2%	2	1.4%
North Dakota	0	0.0%	4	6.6%	0	0.0%	2	3.7%	1	1.7%	2	3.2%
Ohio	1	1.1%	1	1.0%	3	3.3%	1	1.2%	1	1.4%	1	1.1%
Oklahoma	1	1.0%	1	1.0%	0	0.0%	3	3.6%	12	14.6%	7	6.1%
Oregon	0	0.0%	2	3.0%	1	1.7%	0	0.0%	2	3.1%	0	0.0%
Pennsylvania	1	0.5%	5	2.5%	6	3.0%	4	1.9%	4	2.0%	6	2.9%
Rhode Island	10	10.2%	6	6.0%	3	2.9%	6	5.7%	3	3.1%	10	9.6%
South Carolina	5	4.5%	5	3.4%	2	1.7%	9	5.9%	5	4.3%	2	1.3%
South Dakota	1	1.4%	5	6.8%	0	0.0%	2	3.2%	0	0.0%	4	5.3%
Tennessee	2	1.9%	12	12.2%	8	7.7%	2	1.8%	3	3.4%	4	3.7%
Texas	7	4.5%	11	7.5%	11	7.3%	5	3.3%	9	6.0%	4	2.6%
Utah	2	2.5%	8	10.3%	3	3.9%	3	3.9%	0	0.0%	3	3.9%
Vermont	0	0.0%	0	0.0%	1	0.7%	1	0.7%	3	2.0%	2	1.3%
Washington	1	1.0%	1	1.0%	1	0.9%	1	1.0%	2	1.9%	0	0.0%
West Virginia	3	2.9%	2	2.0%	7	6.6%	2	2.2%	5	5.1%	10	10.8%
Wisconsin	1	1.1%	2	2.1%	0	0.0%	0	0.0%	2	2.0%	1	1.1%
Wyoming	0	0.0%	3	5.0%	4	6.3%	3	5.5%	3	4.6%	6	10.0%

Alaska

General election defeats

There were 50 seats up for election in Alaska. Overall, 39 incumbents advanced to the general election, including 17 Democrats, 20 Republicans, and two independents. Of that total, two Republican incumbents lost, representing 5.1% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Alaska, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	14	0	0.0%	15	2	13.3%	31	2	6.5%
Senate	3	0	0.0%	5	0	0.0%	8	0	0.0%
Total	17	0	0.0%	20	2	10.0%	39	2	5.1%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Alaska, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	22	2	9.1%	23	1	4.3%	45	3	6.7%
2012	21	6	28.6%	30	2	6.7%	52	9	17.3%
2014	18	0	0.0%	27	1	3.7%	45	1	2.2%
2016	16	0	0.0%	19	2	10.5%	36	2	5.6%
2018	14	1	7.1%	20	1	5.0%	36	3	8.3%
2020	17	0	0.0%	20	2	10.0%	39	2	5.1%

Primary defeats

There were 50 seats up for election in Alaska. Overall, 47 incumbents filed for re-election, including 17 Democrats and 28 Republicans. Of that total, eight Republican incumbents lost in primaries, representing 17.0% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Alaska, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	14	2	0	0.0%	21	11	6	28.6%	37	13	6	16.2%
Senate	3	0	0	0.0%	7	6	2	28.6%	10	6	2	20.0%
Total	17	2	0	0.0%	28	17	8	28.6%	47	19	8	17.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Alaska, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	22	1	0	0.0%	23	5	0	0.0%	45	6	0	0.0%
2012	21	3	0	0.0%	32	13	2	6.3%	54	16	2	3.7%
2014	18	1	0	0.0%	29	3	2	6.9%	47	4	2	4.3%
2016	18	2	2	11.1%	22	10	3	13.6%	41	12	5	12.2%
2018	14	0	0	0.0%	21	11	1	4.8%	37	11	1	2.7%
2020	17	2	0	0.0%	28	17	8	28.6%	47	19	8	17.0%

Arizona

General election defeats

There were 90 seats up for election in Arizona. Overall, 70 incumbents advanced to the general election, including 37 Democrats and 33 Republicans. Of that total, three incumbents lost—one Democrat and two Republicans—representing 4.3% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Arizona, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	26	1	3.8%	21	1	4.8%	47	2	4.3%
Senate	11	0	0.0%	12	1	8.3%	23	1	4.3%
Total	37	1	2.7%	33	2	6.1%	70	3	4.3%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Arizona, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	19	6	31.6%	28	0	0.0%	47	6	12.8%
2012	17	0	0.0%	40	4	10.0%	57	4	7.0%
2014	26	1	3.8%	38	1	2.6%	64	2	3.1%
2016	23	2	8.7%	37	2	5.4%	60	4	6.7%
2018	23	0	0.0%	31	3	9.7%	54	3	5.6%
2020	37	1	2.7%	33	2	6.1%	70	3	4.3%

Primary defeats

There were 90 seats up for election in Arizona. Overall, 73 incumbents filed for re-election, including 37 Democrats and 36 Republicans. Of that total, three Republican incumbents lost in primaries, representing 4.1% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Arizona, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	26	11	0	0.0%	22	9	1	4.5%	48	20	1	2.1%
Senate	11	2	0	0.0%	14	5	2	14.3%	25	7	2	8.0%
Total	37	13	0	0.0%	36	14	3	8.3%	73	27	3	4.1%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Arizona, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	20	7	1	5.0%	31	19	3	9.7%	51	26	4	7.8%
2012	17	11	0	0.0%	43	13	3	7.0%	60	24	3	5.0%
2014	27	6	1	3.7%	39	22	1	2.6%	66	28	2	3.0%
2016	26	11	3	11.5%	38	8	1	2.6%	64	19	4	6.3%
2018	24	8	1	4.2%	33	19	2	6.1%	57	27	3	5.3%
2020	37	13	0	0.0%	36	14	3	8.3%	73	27	3	4.1%

Arkansas

General election defeats

There were 117 seats up for election in Arkansas. Overall, 104 incumbents advanced to the general election, including 26 Democrats and 78 Republicans. Of that total, five incumbents lost—four Democrats and one Republican—representing 4.8% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Arkansas, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	23	2	8.7%	66	1	1.5%	89	3	3.4%
Senate	3	2	66.7%	12	0	0.0%	15	2	13.3%
Total	26	4	15.4%	78	1	1.3%	104	5	4.8%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Arkansas, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	41	6	14.6%	22	0	0.0%	63	6	9.5%
2012	38	3	7.9%	47	3	6.4%	85	6	7.1%
2014	43	10	23.3%	40	0	0.0%	83	10	12.0%
2016	34	6	17.6%	64	0	0.0%	98	6	6.1%
2018	20	2	10.0%	70	2	2.9%	91	5	5.5%
2020	26	4	15.4%	78	1	1.3%	104	5	4.8%

Primary defeats

There were 117 seats up for election in Arkansas. Overall, 107 incumbents filed for re-election, including 27 Democrats and 80 Republicans. Of that total, two Republican incumbents lost in primaries, representing 1.9% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Arkansas, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	24	2	0	0.0%	67	6	1	1.5%	91	8	1	1.1%
Senate	3	1	0	0.0%	13	2	1	7.7%	16	3	1	6.3%
Total	27	3	0	0.0%	80	8	2	2.5%	107	11	2	1.9%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Arkansas, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	42	3	1	2.4%	22	1	0	0.0%	64	4	1	1.6%
2012	40	6	1	2.5%	48	6	1	2.1%	88	12	2	2.3%
2014	44	1	1	2.3%	43	7	3	7.0%	87	8	4	4.6%
2016	36	2	1	2.8%	66	8	1	1.5%	102	10	2	2.0%
2018	21	4	0	0.0%	73	11	3	4.1%	95	15	3	3.2%
2020	27	3	0	0.0%	80	8	2	2.5%	107	11	2	1.9%

California

General election defeats

There were 100 seats up for election in California. Overall, 84 incumbents advanced to the general election, including 65 Democrats, 18 Republicans, and one independent. Of that total, two Republican incumbents lost, representing 2.4% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in California, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	55	0	0.0%	14	0	0.0%	70	0	0.0%
Senate	10	0	0.0%	4	2	50.0%	14	2	14.3%
Total	65	0	0.0%	18	2	11.1%	84	2	2.4%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in California, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	44	0	0.0%	18	0	0.0%	62	0	0.0%
2012	36	2	5.6%	20	1	5.0%	56	3	5.4%
2014	45	4	8.9%	22	0	0.0%	67	4	6.0%
2016	51	2	3.9%	23	3	13.0%	74	5	6.8%
2018	61	0	0.0%	27	5	18.5%	88	5	5.7%
2020	65	0	0.0%	18	2	11.1%	84	2	2.4%

Primary defeats

There were 100 seats up for election in California. Overall, 86 incumbents filed for re-election, including 65 Democrats and 20 Republicans. Of that total, two Republican incumbents lost in primaries, representing 2.3% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in California, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	55	20	0	0.0%	16	7	2	12.5%	72	28	2	2.8%
Senate	10	5	0	0.0%	4	4	0	0.0%	14	9	0	0.0%
Total	65	25	0	0.0%	20	11	2	10.0%	86	37	2	2.3%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in California, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	44	3	0	0.0%	18	3	0	0.0%	62	6	0	0.0%
2012	36	15	0	0.0%	20	7	0	0.0%	56	22	0	0.0%
2014	45	19	0	0.0%	22	4	0	0.0%	67	23	0	0.0%
2016	51	15	0	0.0%	23	10	0	0.0%	74	25	0	0.0%
2018	59	25	0	0.0%	27	12	0	0.0%	86	37	0	0.0%
2020	65	25	0	0.0%	20	11	2	10.0%	86	37	2	2.3%

Colorado

General election defeats

There were 83 seats up for election in Colorado. Overall, 63 incumbents advanced to the general election, including 41 Democrats and 22 Republicans. Of that total, two incumbents lost—one Democrat and one Republican—representing 3.2% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Colorado, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	34	1	2.9%	18	1	5.6%	52	2	3.8%
Senate	7	0	0.0%	4	0	0.0%	11	0	0.0%
Total	41	1	2.4%	22	1	4.5%	63	2	3.2%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Colorado, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	37	6	16.2%	26	0	0.0%	64	7	10.9%
2012	29	0	0.0%	22	4	18.2%	51	4	7.8%
2014	36	4	11.1%	23	2	8.7%	59	6	10.2%
2016	26	0	0.0%	31	4	12.9%	57	4	7.0%
2018	27	0	0.0%	26	4	15.4%	53	4	7.5%
2020	41	1	2.4%	22	1	4.5%	63	2	3.2%

Primary defeats

There were 83 seats up for election in Colorado. Overall, 63 incumbents filed for re-election, including 41 Democrats and 22 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Colorado, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	34	2	0	0.0%	18	1	0	0.0%	52	3	0	0.0%
Senate	7	1	0	0.0%	4	1	0	0.0%	11	2	0	0.0%
Total	41	3	0	0.0%	22	2	0	0.0%	63	5	0	0.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Colorado, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	37	1	0	0.0%	26	0	0	0.0%	64	1	0	0.0%
2012	29	1	0	0.0%	24	3	2	8.3%	53	4	2	3.8%
2014	36	0	0	0.0%	23	2	0	0.0%	59	2	0	0.0%
2016	26	0	0	0.0%	33	5	2	6.1%	59	5	2	3.4%
2018	27	0	0	0.0%	30	5	2	6.7%	57	5	2	3.5%
2020	41	3	0	0.0%	22	2	0	0.0%	63	5	0	0.0%

Connecticut

General election defeats

There were 187 seats up for election in Connecticut. Overall, 170 incumbents advanced to the general election, including 106 Democrats and 64 Republicans. Of that total, eight incumbents lost—two Democrats and six Republicans—representing 4.7% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Connecticut, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	84	2	2.4%	51	4	7.8%	135	6	4.4%
Senate	22	0	0.0%	13	2	15.4%	35	2	5.7%
Total	106	2	1.9%	64	6	9.4%	170	8	4.7%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Connecticut, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	123	13	10.6%	44	0	0.0%	167	13	7.8%
2012	100	1	1.0%	59	3	5.1%	159	4	2.5%
2014	103	9	8.7%	58	1	1.7%	161	10	6.2%
2016	94	8	8.5%	68	2	2.9%	162	10	6.2%
2018	82	0	0.0%	79	15	19.0%	161	15	9.3%
2020	106	2	1.9%	64	6	9.4%	170	8	4.7%

Primary defeats

There were 187 seats up for election in Connecticut. Overall, 170 incumbents filed for re-election, including 106 Democrats and 64 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Connecticut, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	84	4	0	0.0%	51	0	0	0.0%	135	4	0	0.0%
Senate	22	1	0	0.0%	13	0	0	0.0%	35	1	0	0.0%
Total	106	5	0	0.0%	64	0	0	0.0%	170	5	0	0.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Connecticut, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	124	10	1	0.8%	44	0	0	0.0%	168	10	1	0.6%
2012	104	6	4	3.8%	59	1	0	0.0%	163	7	4	2.5%
2014	105	8	2	1.9%	58	1	0	0.0%	163	9	2	1.2%
2016	96	8	2	2.1%	68	2	0	0.0%	164	10	2	1.2%
2018	84	5	2	2.4%	79	0	0	0.0%	163	5	2	1.2%
2020	106	5	0	0.0%	64	0	0	0.0%	170	5	0	0.0%

Delaware

General election defeats

There were 52 seats up for election in Delaware. Overall, 46 incumbents advanced to the general election, including 26 Democrats and 20 Republicans. Of that total, two Republican incumbents lost, representing 4.3% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Delaware, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	22	0	0.0%	15	0	0.0%	37	0	0.0%
Senate	4	0	0.0%	5	2	40.0%	9	2	22.2%
Total	26	0	0.0%	20	2	10.0%	46	2	4.3%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Delaware, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	31	2	6.5%	16	1	6.3%	47	3	6.4%
2012	34	1	2.9%	16	2	12.5%	50	3	6.0%
2014	30	2	6.7%	17	0	0.0%	47	2	4.3%
2016	31	1	3.2%	19	0	0.0%	50	1	2.0%
2018	20	0	0.0%	16	2	12.5%	36	2	5.6%
2020	26	0	0.0%	20	2	10.0%	46	2	4.3%

Primary defeats

There were 52 seats up for election in Delaware. Overall, 50 incumbents filed for re-election, including 30 Democrats and 20 Republicans. Of that total, four Democratic incumbents lost in primaries, representing 8.0% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Delaware, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	25	5	3	12.0%	15	0	0	0.0%	40	5	3	7.5%
Senate	5	2	1	20.0%	5	0	0	0.0%	10	2	1	10.0%
Total	30	7	4	13.3%	20	0	0	0.0%	50	7	4	8.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Delaware, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	32	6	1	3.1%	16	1	0	0.0%	48	7	1	2.1%
2012	35	6	1	2.9%	18	5	2	11.1%	53	11	3	5.7%
2014	31	6	1	3.2%	18	3	1	5.6%	49	9	2	4.1%
2016	31	5	0	0.0%	19	1	0	0.0%	50	6	0	0.0%
2018	21	3	1	4.8%	16	0	0	0.0%	37	3	1	2.7%
2020	30	7	4	13.3%	20	0	0	0.0%	50	7	4	8.0%

Florida

General election defeats

There were 140 seats up for election in Florida. Overall, 96 incumbents advanced to the general election, including 36 Democrats and 60 Republicans. Of that total, four Democratic incumbents lost, representing 4.2% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Florida, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	29	3	10.3%	55	0	0.0%	84	3	3.6%
Senate	7	1	14.3%	5	0	0.0%	12	1	8.3%
Total	36	4	11.1%	60	0	0.0%	96	4	4.2%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Florida, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	40	5	12.5%	55	0	0.0%	95	5	5.3%
2012	29	0	0.0%	77	5	6.5%	106	5	4.7%
2014	42	5	11.9%	79	0	0.0%	121	5	4.1%
2016	25	2	8.0%	72	1	1.4%	97	3	3.1%
2018	37	2	5.4%	62	4	6.5%	99	6	6.1%
2020	36	4	11.1%	60	0	0.0%	96	4	4.2%

Primary defeats

There were 140 seats up for election in Florida. Overall, 100 incumbents filed for re-election, including 38 Democrats and 62 Republicans. Of that total, three incumbents lost in primaries—two Democrats and one Republican—representing 3.0% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Florida, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	31	7	2	6.5%	57	9	1	1.8%	88	16	3	3.4%
Senate	7	1	0	0.0%	5	0	0	0.0%	12	1	0	0.0%
Total	38	8	2	5.3%	62	9	1	1.6%	100	17	3	3.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Florida, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	40	6	0	0.0%	57	12	1	1.8%	97	18	1	1.0%
2012	31	7	2	6.5%	79	24	1	1.3%	110	31	3	2.7%
2014	43	8	1	2.3%	79	13	0	0.0%	122	21	1	0.8%
2016	26	7	0	0.0%	72	7	0	0.0%	98	14	0	0.0%
2018	39	11	2	5.1%	63	8	0	0.0%	102	19	2	2.0%
2020	38	8	2	5.3%	62	9	1	1.6%	100	17	3	3.0%

Georgia

General election defeats

There were 236 seats up for election in Georgia. Overall, 205 incumbents advanced to the general election, including 84 Democrats and 121 Republicans. Of that total, five incumbents lost—one Democrat and four Republicans—representing 2.4% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Georgia, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	66	1	1.5%	92	3	3.3%	158	4	2.5%
Senate	18	0	0.0%	29	1	3.4%	47	1	2.1%
Total	84	1	1.2%	121	4	3.3%	205	5	2.4%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Georgia, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	84	2	2.4%	108	1	0.9%	193	3	1.6%
2012	67	3	4.5%	128	0	0.0%	196	3	1.5%
2014	72	0	0.0%	139	0	0.0%	212	0	0.0%
2016	68	1	1.5%	141	3	2.1%	209	4	1.9%
2018	78	2	2.6%	129	8	6.2%	207	10	4.8%
2020	84	1	1.2%	121	4	3.3%	205	5	2.4%

Primary defeats

There were 236 seats up for election in Georgia. Overall, 210 incumbents filed for re-election, including 89 Democrats and 121 Republicans. Of that total, five incumbents lost in primaries—four Democrats and one Republican—representing 2.4% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Georgia, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	70	20	4	5.7%	93	9	1	1.1%	163	29	5	3.1%
Senate	19	8	0	0.0%	28	5	0	0.0%	47	13	0	0.0%
Total	89	28	4	4.5%	121	14	1	0.8%	210	42	5	2.4%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Georgia, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	86	19	2	2.3%	111	22	3	2.7%	198	41	5	2.5%
2012	73	25	6	8.2%	136	23	6	4.4%	210	48	12	5.7%
2014	74	17	2	2.7%	144	30	5	3.5%	219	47	7	3.2%
2016	71	19	3	4.2%	143	30	2	1.4%	214	49	5	2.3%
2018	82	27	4	4.9%	134	26	5	3.7%	216	53	9	4.2%
2020	89	28	4	4.5%	121	14	1	0.8%	210	42	5	2.4%

Hawaii

General election defeats

There were 64 seats up for election in Hawaii. Overall, 54 incumbents advanced to the general election, including 49 Democrats and 5 Republicans. No incumbents who advanced to the general election lost.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Hawaii, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	39	0	0.0%	4	0	0.0%	43	0	0.0%
Senate	10	0	0.0%	1	0	0.0%	11	0	0.0%
Total	49	0	0.0%	5	0	0.0%	54	0	0.0%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Hawaii, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	51	1	2.0%	6	0	0.0%	57	1	1.8%
2012	60	1	1.7%	6	2	33.3%	66	3	4.5%
2014	49	0	0.0%	6	0	0.0%	55	0	0.0%
2016	52	0	0.0%	8	2	25.0%	60	2	3.3%
2018	47	0	0.0%	4	0	0.0%	51	0	0.0%
2020	49	0	0.0%	5	0	0.0%	54	0	0.0%

Primary defeats

There were 64 seats up for election in Hawaii. Overall, 56 incumbents filed for re-election, including 51 Democrats and 5 Republicans. Of that total, two Democratic incumbents lost in primaries, representing 3.6% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Hawaii, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	41	17	2	4.9%	4	0	0	0.0%	45	17	2	4.4%
Senate	10	3	0	0.0%	1	0	0	0.0%	11	3	0	0.0%
Total	51	20	2	3.9%	5	0	0	0.0%	56	20	2	3.6%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Hawaii, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	52	24	1	1.9%	6	0	0	0.0%	58	24	1	1.7%
2012	64	24	4	6.3%	7	2	1	14.3%	71	26	5	7.0%
2014	52	19	3	5.8%	6	1	0	0.0%	58	20	3	5.2%
2016	53	22	1	1.9%	8	2	0	0.0%	61	24	1	1.6%
2018	50	23	3	6.0%	4	0	0	0.0%	54	23	3	5.6%
2020	51	20	2	3.9%	5	0	0	0.0%	56	20	2	3.6%

Idaho

General election defeats

There were 105 seats up for election in Idaho. Overall, 83 incumbents advanced to the general election, including 16 Democrats and 67 Republicans. Of that total, two Democratic incumbents lost, representing 2.4% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Idaho, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	11	2	18.2%	43	0	0.0%	54	2	3.7%
Senate	5	0	0.0%	24	0	0.0%	29	0	0.0%
Total	16	2	12.5%	67	0	0.0%	83	2	2.4%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Idaho, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	19	2	10.5%	71	0	0.0%	90	2	2.2%
2012	11	0	0.0%	55	2	3.6%	66	2	3.0%
2014	15	0	0.0%	73	2	2.7%	88	2	2.3%
2016	17	2	11.8%	72	0	0.0%	89	2	2.2%
2018	14	0	0.0%	69	5	7.2%	83	5	6.0%
2020	16	2	12.5%	67	0	0.0%	83	2	2.4%

Primary defeats

There were 105 seats up for election in Idaho. Overall, 87 incumbents filed for re-election, including 16 Democrats and 71 Republicans. Of that total, five Republican incumbents lost in primaries, representing 5.7% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Idaho, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	11	0	0	0.0%	47	21	5	10.6%	58	21	5	8.6%
Senate	5	0	0	0.0%	24	7	0	0.0%	29	7	0	0.0%
Total	16	0	0	0.0%	71	28	5	7.0%	87	28	5	5.7%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Idaho, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	19	1	0	0.0%	77	25	6	7.8%	96	26	6	6.3%
2012	11	1	0	0.0%	59	33	3	5.1%	70	34	3	4.3%
2014	15	1	0	0.0%	79	29	6	7.6%	94	30	6	6.4%
2016	17	1	0	0.0%	79	30	7	8.9%	96	31	7	7.3%
2018	14	1	0	0.0%	75	30	6	8.0%	89	31	6	6.7%
2020	16	0	0	0.0%	71	28	5	7.0%	87	28	5	5.7%

Illinois

General election defeats

There were 138 seats up for election in Illinois. Overall, 122 incumbents advanced to the general election, including 84 Democrats and 38 Republicans. Of that total, seven incumbents lost—four Democrats and three Republicans—representing 5.7% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Illinois, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	70	4	5.7%	38	3	7.9%	108	7	6.5%
Senate	14	0	0.0%	0	0	0.0%	14	0	0.0%
Total	84	4	4.8%	38	3	7.9%	122	7	5.7%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Illinois, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	75	7	9.3%	50	0	0.0%	125	7	5.6%
2012	81	0	0.0%	58	5	8.6%	139	5	3.6%
2014	80	1	1.3%	43	0	0.0%	123	1	0.8%
2016	90	5	5.6%	53	1	1.9%	143	6	4.2%
2018	75	1	1.3%	55	9	16.4%	130	10	7.7%
2020	84	4	4.8%	38	3	7.9%	122	7	5.7%

Primary defeats

There were 138 seats up for election in Illinois. Overall, 122 incumbents filed for re-election, including 84 Democrats and 38 Republicans. Of that total, two Democratic incumbents lost in primaries, representing 1.6% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Illinois, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	70	13	2	2.9%	38	4	0	0.0%	108	17	2	1.9%
Senate	14	5	0	0.0%	0	0	0	#DIV/0!	14	5	0	0.0%
Total	84	18	2	2.4%	38	4	0	0.0%	122	22	2	1.6%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Illinois, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	76	14	0	0.0%	51	7	1	2.0%	127	21	1	0.8%
2012	82	21	1	1.2%	63	12	5	7.9%	145	33	6	4.1%
2014	82	9	2	2.4%	43	5	1	2.3%	125	14	3	2.4%
2016	92	11	1	1.1%	52	6	0	0.0%	144	17	1	0.7%
2018	77	10	2	2.6%	52	7	1	1.9%	129	17	3	2.3%
2020	84	18	2	2.4%	38	4	0	0.0%	122	22	2	1.6%

Indiana

General election defeats

There were 125 seats up for election in Indiana. Overall, 115 incumbents advanced to the general election, including 35 Democrats and 80 Republicans. Of that total, seven incumbents lost—five Democrats and two Republicans—representing 6.1% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Indiana, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	30	5	16.7%	62	1	1.6%	92	6	6.5%
Senate	5	0	0.0%	18	1	5.6%	23	1	4.3%
Total	35	5	14.3%	80	2	2.5%	115	7	6.1%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Indiana, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	56	10	17.9%	55	0	0.0%	111	10	9.0%
2012	34	3	8.8%	68	2	2.9%	102	5	4.9%
2014	36	5	13.9%	79	1	1.3%	115	6	5.2%
2016	29	0	0.0%	76	1	1.3%	105	1	1.0%
2018	28	0	0.0%	81	4	4.9%	109	4	3.7%
2020	35	5	14.3%	80	2	2.5%	115	7	6.1%

Primary defeats

There were 125 seats up for election in Indiana. Overall, 115 incumbents filed for re-election, including 34 Democrats and 81 Republicans. Of that total, one Republican incumbent lost in a primary, representing 0.9% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Indiana, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	29	5	0	0.0%	63	13	1	1.6%	92	18	1	1.1%
Senate	5	1	0	0.0%	18	4	0	0.0%	23	5	0	0.0%
Total	34	6	0	0.0%	81	17	1	1.2%	115	23	1	0.9%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Indiana, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	56	6	0	0.0%	57	15	2	3.5%	113	21	2	1.8%
2012	35	5	0	0.0%	68	12	0	0.0%	103	17	0	0.0%
2014	36	0	0	0.0%	81	11	3	3.7%	117	11	3	2.6%
2016	30	2	0	0.0%	78	15	2	2.6%	108	17	2	1.9%
2018	28	7	0	0.0%	83	16	2	2.4%	111	23	2	1.8%
2020	34	6	0	0.0%	81	17	1	1.2%	115	23	1	0.9%

Iowa

General election defeats

There were 125 seats up for election in Iowa. Overall, 106 incumbents advanced to the general election, including 49 Democrats and 57 Republicans. Of that total, seven Democratic incumbents lost, representing 6.6% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Iowa, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	43	6	14.0%	45	0	0.0%	88	6	6.8%
Senate	6	1	16.7%	12	0	0.0%	18	1	5.6%
Total	49	7	14.3%	57	0	0.0%	106	7	6.6%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Iowa, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	63	18	28.6%	42	0	0.0%	105	18	17.1%
2012	45	1	2.2%	51	7	13.7%	96	8	8.3%
2014	55	5	9.1%	54	0	0.0%	109	5	4.6%
2016	49	7	14.3%	61	0	0.0%	110	7	6.4%
2018	46	2	4.3%	55	5	9.1%	101	7	6.9%
2020	49	7	14.3%	57	0	0.0%	106	7	6.6%

Primary defeats

There were 125 seats up for election in Iowa. Overall, 108 incumbents filed for re-election, including 51 Democrats and 57 Republicans. Of that total, one Democratic incumbent lost in a primary, representing 0.9% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Iowa, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	45	4	1	2.2%	45	1	0	0.0%	90	5	1	1.1%
Senate	6	0	0	0.0%	12	1	0	0.0%	18	1	0	0.0%
Total	51	4	1	2.0%	57	2	0	0.0%	108	6	1	0.9%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Iowa, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	65	5	1	1.5%	43	3	1	2.3%	108	8	2	1.9%
2012	45	0	0	0.0%	55	16	3	5.5%	100	16	3	3.0%
2014	55	3	0	0.0%	55	5	0	0.0%	110	8	0	0.0%
2016	50	4	1	2.0%	62	5	0	0.0%	112	9	1	0.9%
2018	48	1	0	0.0%	55	4	0	0.0%	103	5	0	0.0%
2020	51	4	1	2.0%	57	2	0	0.0%	108	6	1	0.9%

Kansas

General election defeats

There were 165 seats up for election in Kansas. Overall, 128 incumbents advanced to the general election, including 42 Democrats and 86 Republicans. Of that total, five incumbents lost—four Democrats and one Republican—representing 3.9% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Kansas, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	33	3	9.1%	67	0	0.0%	100	3	3.0%
Senate	9	1	11.1%	19	1	5.3%	28	2	7.1%
Total	42	4	9.5%	86	1	1.2%	128	5	3.9%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Kansas, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	44	13	29.5%	66	0	0.0%	110	13	11.8%
2012	36	8	22.2%	71	6	8.5%	107	14	13.1%
2014	29	3	10.3%	80	0	0.0%	109	3	2.8%
2016	33	0	0.0%	84	11	13.1%	117	11	9.4%
2018	40	5	12.5%	65	3	4.6%	105	8	7.6%
2020	42	4	9.5%	86	1	1.2%	128	5	3.9%

Primary defeats

There were 165 seats up for election in Kansas. Overall, 142 incumbents filed for re-election, including 43 Democrats and 99 Republicans. Of that total, 13 incumbents lost in primaries—one Democrat and 12 Republicans—representing 9.2% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Kansas, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	34	3	1	2.9%	72	18	5	6.9%	106	21	6	5.7%
Senate	9	0	0	0.0%	27	10	7	25.9%	36	10	7	19.4%
Total	43	3	1	2.3%	99	28	12	12.1%	142	31	13	9.2%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Kansas, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	45	3	1	2.2%	70	20	4	5.7%	115	23	5	4.3%
2012	37	6	1	2.7%	90	48	19	21.1%	127	54	20	15.7%
2014	29	0	0	0.0%	83	21	3	3.6%	112	21	3	2.7%
2016	34	4	1	2.9%	98	35	14	14.3%	132	39	15	11.4%
2018	40	7	0	0.0%	72	19	7	9.7%	112	26	7	6.3%
2020	43	3	1	2.3%	99	28	12	12.1%	142	31	13	9.2%

Kentucky

General election defeats

There were 119 seats up for election in Kentucky. Overall, 99 incumbents advanced to the general election, including 35 Democrats and 64 Republicans. Of that total, seven Democratic incumbents lost, representing 7.1% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Kentucky, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	30	6	20.0%	54	0	0.0%	84	6	7.1%
Senate	5	1	20.0%	10	0	0.0%	15	1	6.7%
Total	35	7	20.0%	64	0	0.0%	99	7	7.1%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Kentucky, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	67	7	10.4%	42	1	2.4%	110	8	7.3%
2012	63	3	4.8%	41	1	2.4%	104	4	3.8%
2014	54	3	5.6%	52	1	1.9%	106	4	3.8%
2016	56	17	30.4%	51	1	2.0%	107	18	16.8%
2018	28	3	10.7%	66	6	9.1%	94	9	9.6%
2020	35	7	20.0%	64	0	0.0%	99	7	7.1%

Primary defeats

There were 119 seats up for election in Kentucky. Overall, 102 incumbents filed for re-election, including 35 Democrats and 67 Republicans. Of that total, three Republican incumbents lost in primaries, representing 2.9% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Kentucky, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	30	3	0	0.0%	56	8	2	3.6%	86	11	2	2.3%
Senate	5	0	0	0.0%	11	2	1	9.1%	16	2	1	6.3%
Total	35	3	0	0.0%	67	10	3	4.5%	102	13	3	2.9%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Kentucky, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	68	11	1	1.5%	43	10	1	2.3%	112	21	2	1.8%
2012	64	11	1	1.6%	42	11	0	0.0%	106	22	1	0.9%
2014	55	6	1	1.8%	53	9	1	1.9%	108	15	2	1.9%
2016	57	7	1	1.8%	52	9	1	1.9%	109	16	2	1.8%
2018	29	4	1	3.4%	69	15	3	4.3%	98	19	4	4.1%
2020	35	3	0	0.0%	67	10	3	4.5%	102	13	3	2.9%

Maine

General election defeats

There were 186 seats up for election in Maine. Overall, 142 incumbents advanced to the general election, including 79 Democrats, 58 Republicans, and five independents. Of that total, 11 incumbents lost—eight Democrats, one Republican, and two independents—representing 7.7% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Maine, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	64	7	10.9%	46	0	0.0%	115	9	7.8%
Senate	15	1	6.7%	12	1	8.3%	27	2	7.4%
Total	79	8	10.1%	58	1	1.7%	142	11	7.7%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Maine, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	90	19	21.1%	49	1	2.0%	139	20	14.4%
2012	53	1	1.9%	66	16	24.2%	121	17	14.0%
2014	81	11	13.6%	42	2	4.8%	127	13	10.2%
2016	69	8	11.6%	78	5	6.4%	147	13	8.8%
2018	73	1	1.4%	50	9	18.0%	126	11	8.7%
2020	79	8	10.1%	58	1	1.7%	142	11	7.7%

Primary defeats

There were 186 seats up for election in Maine. Overall, 148 incumbents filed for re-election, including 82 Democrats and 61 Republicans. Of that total, one Republican incumbent lost in a primary, representing 0.7% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Maine, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	66	3	0	0.0%	49	1	1	2.0%	120	4	1	0.8%
Senate	16	1	0	0.0%	12	2	0	0.0%	28	3	0	0.0%
Total	82	4	0	0.0%	61	3	1	1.6%	148	7	1	0.7%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Maine, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	94	3	1	1.1%	49	1	0	0.0%	143	4	1	0.7%
2012	54	4	0	0.0%	67	1	0	0.0%	123	5	0	0.0%
2014	85	2	0	0.0%	48	1	0	0.0%	137	3	0	0.0%
2016	69	2	0	0.0%	80	2	1	1.3%	149	4	1	0.7%
2018	74	2	0	0.0%	53	0	0	0.0%	130	2	0	0.0%
2020	82	4	0	0.0%	61	3	1	1.6%	148	7	1	0.7%

Massachusetts

General election defeats

There were 200 seats up for election in Massachusetts. Overall, 183 incumbents advanced to the general election, including 149 Democrats, 33 Republicans, and one independent. Of that total, two Republican incumbents lost, representing 1.1% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Massachusetts, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	114	0	0.0%	29	1	3.4%	144	1	0.7%
Senate	35	0	0.0%	4	1	25.0%	39	1	2.6%
Total	149	0	0.0%	33	2	6.1%	183	2	1.1%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Massachusetts, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	150	10	6.7%	15	0	0.0%	165	10	6.1%
2012	149	0	0.0%	35	2	5.7%	184	2	1.1%
2014	148	3	2.0%	30	0	0.0%	178	3	1.7%
2016	145	0	0.0%	40	0	0.0%	185	0	0.0%
2018	134	0	0.0%	37	2	5.4%	173	3	1.7%
2020	149	0	0.0%	33	2	6.1%	183	2	1.1%

Primary defeats

There were 200 seats up for election in Massachusetts. Overall, 185 incumbents filed for re-election, including 151 Democrats and 33 Republicans. Of that total, two Democratic incumbents lost in primaries, representing 1.1% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Massachusetts, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	115	17	1	0.9%	29	1	0	0.0%	145	18	1	0.7%
Senate	36	5	1	2.8%	4	0	0	0.0%	40	5	1	2.5%
Total	151	22	2	1.3%	33	1	0	0.0%	185	23	2	1.1%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Massachusetts, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	151	14	1	0.7%	15	0	0	0.0%	166	14	1	0.6%
2012	154	18	4	2.6%	36	1	0	0.0%	190	19	4	2.1%
2014	148	16	1	0.7%	30	1	0	0.0%	178	17	1	0.6%
2016	147	19	2	1.4%	40	1	0	0.0%	187	20	2	1.1%
2018	137	19	3	2.2%	37	1	0	0.0%	176	20	3	1.7%
2020	151	22	2	1.3%	33	1	0	0.0%	185	23	2	1.1%

Michigan

General election defeats

There were 110 seats up for election in Michigan. Overall, 84 incumbents advanced to the general election, including 39 Democrats and 45 Republicans. Of that total, two Democratic incumbents lost, representing 2.4% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Michigan, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	39	2	5.1%	45	0	0.0%	84	2	2.4%
Senate	Did not hold elections.
Total	39	2	5.1%	45	0	0.0%	84	2	2.4%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Michigan, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	40	9	22.5%	28	0	0.0%	68	9	13.2%
2012	32	0	0.0%	55	5	9.1%	87	5	5.7%
2014	40	2	5.0%	56	0	0.0%	96	2	2.1%
2016	32	1	3.1%	36	0	0.0%	68	1	1.5%
2018	30	0	0.0%	45	3	6.7%	75	3	4.0%
2020	39	2	5.1%	45	0	0.0%	84	2	2.4%

Primary defeats

There were 110 seats up for election in Michigan. Overall, 84 incumbents filed for re-election, including 39 Democrats and 45 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Michigan, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	39	14	0	0.0%	45	10	0	0.0%	84	24	0	0.0%
Senate	Did not hold elections.
Total	39	14	0	0.0%	45	10	0	0.0%	84	24	0	0.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Michigan, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	40	10	0	0.0%	28	7	0	0.0%	68	17	0	0.0%
2012	36	19	4	11.1%	56	18	1	1.8%	92	37	5	5.4%
2014	40	9	0	0.0%	57	19	1	1.8%	97	28	1	1.0%
2016	32	14	0	0.0%	36	9	0	0.0%	68	23	0	0.0%
2018	32	14	2	6.3%	46	9	1	2.2%	78	23	3	3.8%
2020	39	14	0	0.0%	45	10	0	0.0%	84	24	0	0.0%

Minnesota

General election defeats

There were 201 seats up for election in Minnesota. Overall, 173 incumbents advanced to the general election, including 86 Democrats and 87 Republicans. Of that total, nine incumbents lost—seven Democrats and two Republicans—representing 5.2% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Minnesota, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	58	5	8.6%	54	0	0.0%	112	5	4.5%
Senate	28	2	7.1%	33	2	6.1%	61	4	6.6%
Total	86	7	8.1%	87	2	2.3%	173	9	5.2%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Minnesota, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	120	34	28.3%	55	0	0.0%	175	34	19.4%
2012	71	0	0.0%	81	16	19.8%	152	16	10.5%
2014	68	11	16.2%	51	0	0.0%	119	11	9.2%
2016	80	9	11.3%	89	2	2.2%	169	11	6.5%
2018	41	0	0.0%	69	15	21.7%	110	15	13.6%
2020	86	7	8.1%	87	2	2.3%	173	9	5.2%

Primary defeats

There were 201 seats up for election in Minnesota. Overall, 182 incumbents filed for re-election, including 95 Democrats and 87 Republicans. Of that total, four Democratic incumbents lost in primaries, representing 2.2% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Minnesota, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	65	4	2	3.1%	54	6	0	0.0%	119	10	2	1.7%
Senate	30	7	2	6.7%	33	2	0	0.0%	63	9	2	3.2%
Total	95	11	4	4.2%	87	8	0	0.0%	182	19	4	2.2%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Minnesota, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	121	5	1	0.8%	56	3	1	1.8%	177	8	2	1.1%
2012	72	7	0	0.0%	82	4	1	1.2%	154	11	1	0.6%
2014	68	4	0	0.0%	51	1	0	0.0%	119	5	0	0.0%
2016	82	7	2	2.4%	91	4	2	2.2%	173	11	4	2.3%
2018	41	5	0	0.0%	70	2	1	1.4%	111	7	1	0.9%
2020	95	11	4	4.2%	87	8	0	0.0%	182	19	4	2.2%

Missouri

General election defeats

There were 180 seats up for election in Missouri. Overall, 120 incumbents advanced to the general election, including 35 Democrats and 85 Republicans. Of that total, one Republican incumbent lost, representing 0.8% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Missouri, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	33	0	0.0%	81	1	1.2%	114	1	0.9%
Senate	2	0	0.0%	4	0	0.0%	6	0	0.0%
Total	35	0	0.0%	85	1	1.2%	120	1	0.8%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Missouri, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	53	12	22.6%	49	0	0.0%	102	12	11.8%
2012	36	2	5.6%	82	4	4.9%	118	6	5.1%
2014	48	5	10.4%	100	0	0.0%	148	5	3.4%
2016	32	0	0.0%	104	0	0.0%	137	1	0.7%
2018	33	1	3.0%	82	2	2.4%	115	3	2.6%
2020	35	0	0.0%	85	1	1.2%	120	1	0.8%

Primary defeats

There were 180 seats up for election in Missouri. Overall, 123 incumbents filed for re-election, including 36 Democrats and 87 Republicans. Of that total, one Democratic incumbent lost in a primary, representing 0.8% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Missouri, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	34	9	1	2.9%	83	7	0	0.0%	117	16	1	0.9%
Senate	2	0	0	0.0%	4	1	0	0.0%	6	1	0	0.0%
Total	36	9	1	2.8%	87	8	0	0.0%	123	17	1	0.8%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Missouri, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	55	8	2	3.6%	50	7	1	2.0%	105	15	3	2.9%
2012	43	19	7	16.3%	83	16	1	1.2%	126	35	8	6.3%
2014	47	8	0	0.0%	100	14	0	0.0%	147	22	0	0.0%
2016	35	7	2	5.7%	106	14	2	1.9%	142	21	4	2.8%
2018	34	7	1	2.9%	83	12	0	0.0%	117	19	1	0.9%
2020	36	9	1	2.8%	87	8	0	0.0%	123	17	1	0.8%

Montana

General election defeats

There were 125 seats up for election in Montana. Overall, 78 incumbents advanced to the general election, including 31 Democrats and 47 Republicans. Of that total, six Democratic incumbents lost, representing 7.7% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Montana, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	28	5	17.9%	38	0	0.0%	66	5	7.6%
Senate	3	1	33.3%	9	0	0.0%	12	1	8.3%
Total	31	6	19.4%	47	0	0.0%	78	6	7.7%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Montana, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	33	9	27.3%	40	1	2.5%	73	10	13.7%
2012	26	1	3.8%	53	7	13.2%	79	8	10.1%
2014	30	2	6.7%	46	4	8.7%	76	6	7.9%
2016	35	2	5.7%	42	3	7.1%	77	5	6.5%
2018	34	0	0.0%	53	3	5.7%	87	3	3.4%
2020	31	6	19.4%	47	0	0.0%	78	6	7.7%

Primary defeats

There were 125 seats up for election in Montana. Overall, 84 incumbents filed for re-election, including 31 Democrats and 53 Republicans. Of that total, six Republican incumbents lost in primaries, representing 7.1% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Montana, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	28	4	0	0.0%	43	17	5	11.6%	71	21	5	7.0%
Senate	3	0	0	0.0%	10	2	1	10.0%	13	2	1	7.7%
Total	31	4	0	0.0%	53	19	6	11.3%	84	23	6	7.1%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Montana, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	34	3	1	2.9%	41	8	1	2.4%	75	11	2	2.7%
2012	26	3	1	3.8%	56	14	3	5.4%	82	17	4	4.9%
2014	32	3	0	0.0%	48	15	2	4.2%	80	18	2	2.5%
2016	36	1	0	0.0%	44	13	2	4.5%	80	14	2	2.5%
2018	34	1	0	0.0%	55	9	1	1.8%	89	10	1	1.1%
2020	31	4	0	0.0%	53	19	6	11.3%	84	23	6	7.1%

Nebraska

General election defeats

There were 25 seats up for election in Nebraska. Overall, 19 incumbents advanced to the general election, including 7 Democrats and 12 Republicans. Of that total, two incumbents lost—one Democrat and one Republicans—representing 10.5% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Nebraska, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	N/A
Senate	7	1	14.3%	12	1	8.3%	19	2	10.5%
Total	7	1	14.3%	12	1	8.3%	19	2	10.5%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Nebraska, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	10	1	10.0%	10	0	0.0%	21	2	9.5%
2012	6	1	16.7%	10	0	0.0%	16	1	6.3%
2014	2	0	0.0%	5	0	0.0%	7	0	0.0%
2016	4	0	0.0%	8	5	62.5%	13	5	38.5%
2018	3	0	0.0%	12	2	16.7%	16	3	18.8%
2020	7	1	14.3%	12	1	8.3%	19	2	10.5%

Primary defeats

There were 25 seats up for election in Nebraska. Overall, 19 incumbents filed for re-election, including 7 Democrats and 12 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Nebraska, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	N/A
Senate	7	0	0	0.0%	12	2	0	0.0%	19	2	0	0.0%
Total	7	0	0	0.0%	12	2	0	0.0%	19	2	0	0.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Nebraska, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	10	4	0	0.0%	10	1	0	0.0%	21	6	0	0.0%
2012	6	2	0	0.0%	10	2	0	0.0%	16	4	0	0.0%
2014	2	0	0	0.0%	5	1	0	0.0%	7	1	0	0.0%
2016	4	2	0	0.0%	9	1	1	11.1%	14	4	1	7.1%
2018	3	0	0	0.0%	12	4	0	0.0%	16	5	0	0.0%
2020	7	0	0	0.0%	12	2	0	0.0%	19	2	0	0.0%

Nevada

General election defeats

There were 52 seats up for election in Nevada. Overall, 38 incumbents advanced to the general election, including 25 Democrats and 13 Republicans. Of that total, three Democratic incumbents lost, representing 7.9% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Nevada, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	21	3	14.3%	10	0	0.0%	31	3	9.7%
Senate	4	0	0.0%	3	0	0.0%	7	0	0.0%
Total	25	3	12.0%	13	0	0.0%	38	3	7.9%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Nevada, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	17	2	11.8%	8	0	0.0%	25	2	8.0%
2012	23	1	4.3%	11	0	0.0%	34	1	2.9%
2014	26	7	26.9%	17	0	0.0%	43	7	16.3%
2016	21	0	0.0%	17	6	35.3%	39	7	17.9%
2018	24	0	0.0%	13	2	15.4%	37	2	5.4%
2020	25	3	12.0%	13	0	0.0%	38	3	7.9%

Primary defeats

There were 52 seats up for election in Nevada. Overall, 39 incumbents filed for re-election, including 25 Democrats and 14 Republicans. Of that total, one Republican incumbent lost in a primary, representing 2.6% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Nevada, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	21	3	0	0.0%	11	4	1	9.1%	32	7	1	3.1%
Senate	4	0	0	0.0%	3	0	0	0.0%	7	0	0	0.0%
Total	25	3	0	0.0%	14	4	1	7.1%	39	7	1	2.6%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Nevada, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	17	1	0	0.0%	9	4	1	11.1%	26	5	1	3.8%
2012	24	10	1	4.2%	12	2	1	8.3%	36	12	2	5.6%
2014	26	5	0	0.0%	17	8	0	0.0%	43	13	0	0.0%
2016	21	6	0	0.0%	19	11	2	10.5%	41	17	2	4.9%
2018	24	3	0	0.0%	14	5	1	7.1%	38	8	1	2.6%
2020	25	3	0	0.0%	14	4	1	7.1%	39	7	1	2.6%

New Hampshire

General election defeats

There were 424 seats up for election in New Hampshire. Overall, 333 incumbents advanced to the general election, including 205 Democrats and 128 Republicans. Of that total, 37 incumbents lost—36 Democrats and one Republican—representing 11.1% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in New Hampshire, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	194	32	16.5%	119	1	0.8%	313	33	10.5%
Senate	11	4	36.4%	9	0	0.0%	20	4	20.0%
Total	205	36	17.6%	128	1	0.8%	333	37	11.1%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in New Hampshire, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	174	88	50.6%	137	0	0.0%	311	88	28.3%
2012	82	4	4.9%	211	74	35.1%	293	78	26.6%
2014	169	43	25.4%	135	3	2.2%	304	46	15.1%
2016	128	11	8.6%	169	12	7.1%	297	23	7.7%
2018	141	6	4.3%	159	43	27.0%	303	52	17.2%
2020	205	36	17.6%	128	1	0.8%	333	37	11.1%

Primary defeats

There were 424 seats up for election in New Hampshire. Overall, 344 incumbents filed for re-election, including 209 Democrats and 135 Republicans. Of that total, 11 incumbents lost in primaries—four Democrats and seven Republicans—representing 3.2% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in New Hampshire, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	198	44	4	2.0%	125	53	6	4.8%	323	97	10	3.1%
Senate	11	0	0	0.0%	10	3	1	10.0%	21	3	1	4.8%
Total	209	44	4	1.9%	135	56	7	5.2%	344	100	11	3.2%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in New Hampshire, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	178	45	3	1.7%	144	79	8	5.6%	322	124	11	3.4%
2012	85	14	3	3.5%	230	131	19	8.3%	315	145	22	7.0%
2014	170	24	1	0.6%	143	80	8	5.6%	313	104	9	2.9%
2016	128	25	0	0.0%	179	100	10	5.6%	307	125	10	3.3%
2018	147	30	6	4.1%	170	57	11	6.5%	320	87	17	5.3%
2020	209	44	4	1.9%	135	56	7	5.2%	344	100	11	3.2%

New Mexico

General election defeats

There were 112 seats up for election in New Mexico. Overall, 94 incumbents advanced to the general election, including 61 Democrats and 33 Republicans. Of that total, four incumbents lost—two Democrats and two Republicans—representing 4.3% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in New Mexico, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	41	2	4.9%	20	0	0.0%	61	2	3.3%
Senate	20	0	0.0%	13	2	15.4%	33	2	6.1%
Total	61	2	3.3%	33	2	6.1%	94	4	4.3%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in New Mexico, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	43	7	16.3%	22	0	0.0%	65	7	10.8%
2012	45	4	8.9%	39	3	7.7%	85	8	9.4%
2014	31	5	16.1%	27	1	3.7%	58	6	10.3%
2016	52	1	1.9%	51	7	13.7%	103	8	7.8%
2018	32	1	3.1%	26	6	23.1%	58	7	12.1%
2020	61	2	3.3%	33	2	6.1%	94	4	4.3%

Primary defeats

There were 112 seats up for election in New Mexico. Overall, 101 incumbents filed for re-election, including 65 Democrats and 36 Republicans. Of that total, seven incumbents lost in primaries—five Democrats and two Republicans—representing 6.9% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in New Mexico, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	40	7	0	0.0%	21	0	0	0.0%	61	7	0	0.0%
Senate	25	10	5	20.0%	15	3	2	13.3%	40	13	7	17.5%
Total	65	17	5	7.7%	36	3	2	5.6%	101	20	7	6.9%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in New Mexico, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	44	10	1	2.3%	23	4	1	4.3%	67	14	2	3.0%
2012	50	19	4	8.0%	40	5	1	2.5%	91	24	5	5.5%
2014	31	5	1	3.2%	28	2	1	3.6%	59	7	2	3.4%
2016	52	9	1	1.9%	50	0	0	0.0%	102	9	1	1.0%
2018	35	5	3	8.6%	26	1	0	0.0%	61	6	3	4.9%
2020	65	17	5	7.7%	36	3	2	5.6%	101	20	7	6.9%

New York

General election defeats

There were 213 seats up for election in New York. Overall, 174 incumbents advanced to the general election, including 126 Democrats, 46 Republicans, and two independents. Of that total, five incumbents lost—three Democrats, one Republican, and one independent—representing 2.9% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in New York, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	88	1	1.1%	33	1	3.0%	123	3	2.4%
Senate	38	2	5.3%	13	0	0.0%	51	2	3.9%
Total	126	3	2.4%	46	1	2.2%	174	5	2.9%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in New York, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	124	10	8.1%	59	1	1.7%	183	11	6.0%
2012	116	0	0.0%	71	4	5.6%	187	4	2.1%
2014	125	4	3.2%	65	0	0.0%	190	4	2.1%
2016	126	1	0.8%	64	1	1.6%	190	2	1.1%
2018	121	3	2.5%	63	8	12.7%	185	11	5.9%
2020	126	3	2.4%	46	1	2.2%	174	5	2.9%

Primary defeats

There were 213 seats up for election in New York. Overall, 180 incumbents filed for re-election, including 132 Democrats and 46 Republicans. Of that total, six Democratic incumbents lost in primaries, representing 3.3% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in New York, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	94	25	6	6.4%	33	1	0	0.0%	129	26	6	4.7%
Senate	38	9	0	0.0%	13	0	0	0.0%	51	9	0	0.0%
Total	132	34	6	4.5%	46	1	0	0.0%	180	35	6	3.3%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in New York, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	128	35	4	3.1%	59	2	0	0.0%	187	37	4	2.1%
2012	118	24	2	1.7%	71	9	0	0.0%	189	33	2	1.1%
2014	126	22	1	0.8%	66	5	1	1.5%	192	27	2	1.0%
2016	129	28	3	2.3%	65	5	0	0.0%	194	33	3	1.5%
2018	131	27	9	6.9%	64	4	1	1.6%	195	31	10	5.1%
2020	132	34	6	4.5%	46	1	0	0.0%	180	35	6	3.3%

North Carolina

General election defeats

There were 170 seats up for election in North Carolina. Overall, 144 incumbents advanced to the general election, including 69 Democrats and 75 Republicans. Of that total, eight incumbents lost—six Democrats and two Republicans—representing 5.6% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in North Carolina, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	51	5	9.8%	54	2	3.7%	105	7	6.7%
Senate	18	1	5.6%	21	0	0.0%	39	1	2.6%
Total	69	6	8.7%	75	2	2.7%	144	8	5.6%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in North Carolina, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	83	20	24.1%	63	0	0.0%	146	20	13.7%
2012	47	5	10.6%	70	1	1.4%	117	6	5.1%
2014	52	1	1.9%	102	4	3.9%	154	5	3.2%
2016	57	3	5.3%	95	3	3.2%	152	6	3.9%
2018	54	2	3.7%	92	14	15.2%	146	16	11.0%
2020	69	6	8.7%	75	2	2.7%	144	8	5.6%

Primary defeats

There were 170 seats up for election in North Carolina. Overall, 144 incumbents filed for re-election, including 69 Democrats and 75 Republicans. Of that total, two incumbents lost in primaries—one Democrat and one Republican—representing 1.4% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in North Carolina, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	51	11	1	2.0%	53	10	0	0.0%	104	21	1	1.0%
Senate	18	1	0	0.0%	22	2	1	4.5%	40	3	1	2.5%
Total	69	12	1	1.4%	75	12	1	1.3%	144	24	2	1.4%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in North Carolina, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	88	24	4	4.5%	64	15	1	1.6%	152	39	5	3.3%
2012	50	15	2	4.0%	77	22	5	6.5%	127	37	7	5.5%
2014	54	9	2	3.7%	102	20	2	2.0%	156	29	4	2.6%
2016	57	13	1	1.8%	93	18	1	1.1%	150	31	2	1.3%
2018	57	11	3	5.3%	96	28	5	5.2%	153	39	8	5.2%
2020	69	12	1	1.4%	75	12	1	1.3%	144	24	2	1.4%

North Dakota

General election defeats

There were 69 seats up for election in North Dakota. Overall, 61 incumbents advanced to the general election, including 7 Democrats and 54 Republicans. Of that total, three Democratic incumbents lost, representing 4.9% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in North Dakota, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	3	0	0.0%	37	0	0.0%	40	0	0.0%
Senate	4	3	75.0%	17	0	0.0%	21	3	14.3%
Total	7	3	42.9%	54	0	0.0%	61	3	4.9%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in North Dakota, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	24	12	50.0%	33	0	0.0%	57	12	21.1%
2012	18	4	22.2%	39	2	5.1%	57	6	10.5%
2014	10	1	10.0%	49	2	4.1%	59	3	5.1%
2016	21	15	71.4%	31	2	6.5%	52	17	32.7%
2018	11	0	0.0%	48	4	8.3%	59	4	6.8%
2020	7	3	42.9%	54	0	0.0%	61	3	4.9%

Primary defeats

There were 69 seats up for election in North Dakota. Overall, 63 incumbents filed for re-election, including 7 Democrats and 56 Republicans. Of that total, two Republican incumbents lost in primaries, representing 3.2% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in North Dakota, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	3	0	0	0.0%	39	4	2	5.1%	42	4	2	4.8%
Senate	4	0	0	0.0%	17	1	0	0.0%	21	1	0	0.0%
Total	7	0	0	0.0%	56	5	2	3.6%	63	5	2	3.2%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in North Dakota, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	24	2	0	0.0%	33	0	0	0.0%	57	2	0	0.0%
2012	18	0	0	0.0%	43	10	4	9.3%	61	10	4	6.6%
2014	10	0	0	0.0%	49	4	0	0.0%	59	4	0	0.0%
2016	21	0	0	0.0%	33	7	2	6.1%	54	7	2	3.7%
2018	11	0	0	0.0%	49	6	1	2.0%	60	6	1	1.7%
2020	7	0	0	0.0%	56	5	2	3.6%	63	5	2	3.2%

Ohio

General election defeats

There were 115 seats up for election in Ohio. Overall, 91 incumbents advanced to the general election, including 35 Democrats and 56 Republicans. Of that total, four incumbents lost—three Democrats and one Republican—representing 4.4% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Ohio, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	33	2	6.1%	47	1	2.1%	80	3	3.8%
Senate	2	1	50.0%	9	0	0.0%	11	1	9.1%
Total	35	3	8.6%	56	1	1.8%	91	4	4.4%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Ohio, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	46	13	28.3%	40	0	0.0%	86	13	15.1%
2012	35	0	0.0%	65	2	3.1%	100	2	2.0%
2014	30	3	10.0%	56	0	0.0%	86	3	3.5%
2016	28	1	3.6%	59	0	0.0%	87	1	1.1%
2018	24	0	0.0%	50	1	2.0%	74	1	1.4%
2020	35	3	8.6%	56	1	1.8%	91	4	4.4%

Primary defeats

There were 115 seats up for election in Ohio. Overall, 92 incumbents filed for re-election, including 35 Democrats and 57 Republicans. Of that total, one Republican incumbent lost in a primary, representing 1.1% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Ohio, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	33	7	0	0.0%	48	6	1	2.1%	81	13	1	1.2%
Senate	2	0	0	0.0%	9	1	0	0.0%	11	1	0	0.0%
Total	35	7	0	0.0%	57	7	1	1.8%	92	14	1	1.1%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Ohio, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	47	6	1	2.1%	40	8	0	0.0%	87	14	1	1.1%
2012	36	6	0	0.0%	62	8	1	1.6%	98	14	1	1.0%
2014	31	4	1	3.2%	59	19	2	3.4%	90	23	3	3.3%
2016	28	4	0	0.0%	58	10	1	1.7%	86	14	1	1.2%
2018	25	6	0	0.0%	49	14	1	2.0%	74	20	1	1.4%
2020	35	7	0	0.0%	57	7	1	1.8%	92	14	1	1.1%

Oklahoma

General election defeats

There were 125 seats up for election in Oklahoma. Overall, 107 incumbents advanced to the general election, including 22 Democrats and 85 Republicans. Of that total, four Democratic incumbents lost, representing 3.7% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Oklahoma, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	20	3	15.0%	69	0	0.0%	89	3	3.4%
Senate	2	1	50.0%	16	0	0.0%	18	1	5.6%
Total	22	4	18.2%	85	0	0.0%	107	4	3.7%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Oklahoma, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	40	6	15.0%	62	0	0.0%	102	6	5.9%
2012	30	0	0.0%	71	0	0.0%	101	0	0.0%
2014	25	0	0.0%	70	1	1.4%	95	1	1.1%
2016	20	0	0.0%	61	0	0.0%	81	0	0.0%
2018	22	3	13.6%	48	0	0.0%	70	3	4.3%
2020	22	4	18.2%	85	0	0.0%	107	4	3.7%

Primary defeats

There were 125 seats up for election in Oklahoma. Overall, 114 incumbents filed for re-election, including 23 Democrats and 91 Republicans. Of that total, 7 incumbents lost in primaries—one Democrat and six Republicans—representing 6.1% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Oklahoma, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	21	3	1	4.8%	71	23	2	2.8%	92	26	3	3.3%
Senate	2	0	0	0.0%	20	7	4	20.0%	22	7	4	18.2%
Total	23	3	1	4.3%	91	30	6	6.6%	114	33	7	6.1%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Oklahoma, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	41	5	1	2.4%	62	7	0	0.0%	103	12	1	1.0%
2012	30	2	0	0.0%	72	17	1	1.4%	102	19	1	1.0%
2014	25	1	0	0.0%	70	12	0	0.0%	95	13	0	0.0%
2016	20	4	0	0.0%	64	24	3	4.7%	84	28	3	3.6%
2018	22	2	0	0.0%	60	35	12	20.0%	82	37	12	14.6%
2020	23	3	1	4.3%	91	30	6	6.6%	114	33	7	6.1%

Oregon

General election defeats

There were 75 seats up for election in Oregon. Overall, 60 incumbents advanced to the general election, including 34 Democrats and 26 Republicans. Of that total, one Republican incumbent lost, representing 1.7% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Oregon, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	30	0	0.0%	19	1	5.3%	49	1	2.0%
Senate	4	0	0.0%	7	0	0.0%	11	0	0.0%
Total	34	0	0.0%	26	1	3.8%	60	1	1.7%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Oregon, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	43	4	9.3%	25	0	0.0%	68	4	5.9%
2012	30	0	0.0%	34	4	11.8%	64	4	6.3%
2014	38	0	0.0%	21	2	9.5%	59	2	3.4%
2016	30	0	0.0%	28	0	0.0%	58	0	0.0%
2018	41	0	0.0%	23	3	13.0%	64	3	4.7%
2020	34	0	0.0%	26	1	3.8%	60	1	1.7%

Primary defeats

There were 75 seats up for election in Oregon. Overall, 60 incumbents filed for re-election, including 34 Democrats and 26 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Oregon, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	30	3	0	0.0%	19	0	0	0.0%	49	3	0	0.0%
Senate	4	1	0	0.0%	7	1	0	0.0%	11	2	0	0.0%
Total	34	4	0	0.0%	26	1	0	0.0%	60	5	0	0.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Oregon, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	44	2	0	0.0%	25	7	0	0.0%	69	9	0	0.0%
2012	31	1	1	3.2%	35	3	1	2.9%	66	4	2	3.0%
2014	38	3	0	0.0%	22	3	1	4.5%	60	6	1	1.7%
2016	30	2	0	0.0%	28	2	0	0.0%	58	4	0	0.0%
2018	42	4	1	2.4%	23	5	1	4.3%	65	9	2	3.1%
2020	34	4	0	0.0%	26	1	0	0.0%	60	5	0	0.0%

Pennsylvania

General election defeats

There were 228 seats up for election in Pennsylvania. Overall, 202 incumbents advanced to the general election, including 89 Democrats and 113 Republicans. Of that total, five incumbents lost—four Democrats and one Republican—representing 2.5% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Pennsylvania, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	82	3	3.7%	99	0	0.0%	181	3	1.7%
Senate	7	1	14.3%	14	1	7.1%	21	2	9.5%
Total	89	4	4.5%	113	1	0.9%	202	5	2.5%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Pennsylvania, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	101	9	8.9%	106	0	0.0%	207	9	4.3%
2012	83	0	0.0%	113	1	0.9%	196	1	0.5%
2014	90	4	4.4%	108	0	0.0%	198	4	2.0%
2016	83	4	4.8%	122	2	1.6%	205	6	2.9%
2018	78	2	2.6%	111	10	9.0%	189	12	6.3%
2020	89	4	4.5%	113	1	0.9%	202	5	2.5%

Primary defeats

There were 228 seats up for election in Pennsylvania. Overall, 209 incumbents filed for re-election, including 96 Democrats and 113 Republicans. Of that total, six Democratic incumbents lost in primaries, representing 2.9% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Pennsylvania, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	87	15	4	4.6%	99	10	0	0.0%	186	25	4	2.2%
Senate	9	3	2	22.2%	14	0	0	0.0%	23	3	2	8.7%
Total	96	18	6	6.3%	113	10	0	0.0%	209	28	6	2.9%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Pennsylvania, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	100	20	0	0.0%	107	9	1	0.9%	207	29	1	0.5%
2012	88	17	4	4.5%	115	15	1	0.9%	203	32	5	2.5%
2014	95	30	5	5.3%	108	12	1	0.9%	203	42	6	3.0%
2016	89	19	4	4.5%	120	9	0	0.0%	209	28	4	1.9%
2018	82	14	3	3.7%	114	8	1	0.9%	196	22	4	2.0%
2020	96	18	6	6.3%	113	10	0	0.0%	209	28	6	2.9%

Rhode Island

General election defeats

There were 113 seats up for election in Rhode Island. Overall, 94 incumbents advanced to the general election, including 80 Democrats, 13 Republicans, and one independent. Of that total, three incumbents lost—two Democrats and one independent—representing 3.2% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Rhode Island, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	55	2	3.6%	8	0	0.0%	64	3	4.7%
Senate	25	0	0.0%	5	0	0.0%	30	0	0.0%
Total	80	2	2.5%	13	0	0.0%	94	3	3.2%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Rhode Island, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	79	4	5.1%	8	0	0.0%	88	4	4.5%
2012	78	0	0.0%	15	4	26.7%	94	4	4.3%
2014	92	7	7.6%	9	0	0.0%	102	7	6.9%
2016	85	1	1.2%	13	1	7.7%	99	2	2.0%
2018	83	1	1.2%	12	3	25.0%	95	4	4.2%
2020	80	2	2.5%	13	0	0.0%	94	3	3.2%

Primary defeats

There were 113 seats up for election in Rhode Island. Overall, 104 incumbents filed for re-election, including 90 Democrats and 13 Republicans. Of that total, 10 Democratic incumbents lost in primaries, representing 9.6% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Rhode Island, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	61	16	6	9.8%	8	0	0	0.0%	70	16	6	8.6%
Senate	29	10	4	13.8%	5	0	0	0.0%	34	10	4	11.8%
Total	90	26	10	11.1%	13	0	0	0.0%	104	26	10	9.6%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Rhode Island, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	88	32	9	10.2%	9	2	1	11.1%	98	34	10	10.2%
2012	84	24	6	7.1%	15	2	0	0.0%	100	26	6	6.0%
2014	95	18	3	3.2%	9	0	0	0.0%	105	18	3	2.9%
2016	91	18	6	6.6%	13	0	0	0.0%	105	18	6	5.7%
2018	86	20	3	3.5%	12	0	0	0.0%	98	20	3	3.1%
2020	90	26	10	11.1%	13	0	0	0.0%	104	26	10	9.6%

South Carolina

General election defeats

There were 170 seats up for election in South Carolina. Overall, 154 incumbents advanced to the general election, including 59 Democrats and 95 Republicans. Of that total, five Democratic, representing 3.2% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in South Carolina, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	41	2	4.9%	70	0	0.0%	111	2	1.8%
Senate	18	3	16.7%	25	0	0.0%	43	3	7.0%
Total	59	5	8.5%	95	0	0.0%	154	5	3.2%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in South Carolina, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	48	3	6.3%	58	0	0.0%	106	3	2.8%
2012	55	0	0.0%	89	2	2.2%	144	2	1.4%
2014	41	0	0.0%	71	1	1.4%	112	1	0.9%
2016	56	0	0.0%	88	0	0.0%	144	0	0.0%
2018	39	1	2.6%	72	2	2.8%	111	3	2.7%
2020	59	5	8.5%	95	0	0.0%	154	5	3.2%

Primary defeats

There were 170 seats up for election in South Carolina. Overall, 156 incumbents filed for re-election, including 59 Democrats and 97 Republicans. Of that total, two incumbents lost in primaries—one Democrat and one Republican—representing 1.3% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in South Carolina, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	41	8	1	2.4%	72	15	1	1.4%	113	23	2	1.8%
Senate	18	6	0	0.0%	25	7	0	0.0%	43	13	0	0.0%
Total	59	14	1	1.7%	97	22	1	1.0%	156	36	2	1.3%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in South Carolina, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	48	11	0	0.0%	64	15	5	7.8%	112	26	5	4.5%
2012	57	7	2	3.5%	91	16	3	3.3%	148	23	5	3.4%
2014	42	5	0	0.0%	73	15	2	2.7%	115	20	2	1.7%
2016	57	14	1	1.8%	96	28	8	8.3%	153	42	9	5.9%
2018	42	11	3	7.1%	74	25	2	2.7%	116	36	5	4.3%
2020	59	14	1	1.7%	97	22	1	1.0%	156	36	2	1.3%

South Dakota

General election defeats

There were 105 seats up for election in South Dakota. Overall, 72 incumbents advanced to the general election, including 13 Democrats and 59 Republicans. Of that total, four Democratic incumbents lost, representing 5.6% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in South Dakota, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	10	3	30.0%	40	0	0.0%	50	3	6.0%
Senate	3	1	33.3%	19	0	0.0%	22	1	4.5%
Total	13	4	30.8%	59	0	0.0%	72	4	5.6%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in South Dakota, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	25	9	36.0%	44	0	0.0%	69	9	13.0%
2012	13	0	0.0%	53	4	7.5%	66	4	6.1%
2014	16	2	12.5%	58	1	1.7%	74	3	4.1%
2016	10	1	10.0%	50	1	2.0%	60	2	3.3%
2018	9	1	11.1%	67	3	4.5%	76	4	5.3%
2020	13	4	30.8%	59	0	0.0%	72	4	5.6%

Primary defeats

There were 105 seats up for election in South Dakota. Overall, 76 incumbents filed for re-election, including 14 Democrats and 62 Republicans. Of that total, four Republican incumbents lost in primaries, representing 5.3% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in South Dakota, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	10	2	0	0.0%	43	20	4	9.3%	53	22	4	7.5%
Senate	4	0	0	0.0%	19	3	0	0.0%	23	3	0	0.0%
Total	14	2	0	0.0%	62	23	4	6.5%	76	25	4	5.3%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in South Dakota, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	26	3	1	3.8%	45	4	0	0.0%	71	7	1	1.4%
2012	15	3	1	6.7%	59	22	4	6.8%	74	25	5	6.8%
2014	16	2	0	0.0%	58	15	0	0.0%	74	17	0	0.0%
2016	10	0	0	0.0%	53	18	2	3.8%	63	18	2	3.2%
2018	9	3	0	0.0%	70	17	0	0.0%	79	20	0	0.0%
2020	14	2	0	0.0%	62	23	4	6.5%	76	25	4	5.3%

Tennessee

General election defeats

There were 115 seats up for election in Tennessee. Overall, 105 incumbents advanced to the general election, including 25 Democrats, 79 Republicans, and one independent. Of that total, two incumbents lost—one Republican and one independent—representing 1.9% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Tennessee, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	24	0	0.0%	65	0	0.0%	90	1	1.1%
Senate	1	0	0.0%	14	1	7.1%	15	1	6.7%
Total	25	0	0.0%	79	1	1.3%	105	2	1.9%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Tennessee, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	54	13	24.1%	49	0	0.0%	104	13	12.5%
2012	25	1	4.0%	60	1	1.7%	86	2	2.3%
2014	27	2	7.4%	69	0	0.0%	96	2	2.1%
2016	25	1	4.0%	81	1	1.2%	106	2	1.9%
2018	19	0	0.0%	66	1	1.5%	85	1	1.2%
2020	25	0	0.0%	79	1	1.3%	105	2	1.9%

Primary defeats

There were 115 seats up for election in Tennessee. Overall, 109 incumbents filed for re-election, including 26 Democrats and 82 Republicans. Of that total, four incumbents lost in primaries—one Democrat and three Republicans—representing 3.7% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Tennessee, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	25	9	1	4.0%	68	14	3	4.4%	94	23	4	4.3%
Senate	1	1	0	0.0%	14	3	0	0.0%	15	4	0	0.0%
Total	26	10	1	3.8%	82	17	3	3.7%	109	27	4	3.7%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Tennessee, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	54	6	0	0.0%	51	6	2	3.9%	106	12	2	1.9%
2012	30	11	5	16.7%	67	24	7	10.4%	98	35	12	12.2%
2014	29	5	2	6.9%	75	20	6	8.0%	104	25	8	7.7%
2016	26	8	0	0.0%	83	26	2	2.4%	109	34	2	1.8%
2018	20	7	1	5.0%	69	17	2	2.9%	89	24	3	3.4%
2020	26	10	1	3.8%	82	17	3	3.7%	109	27	4	3.7%

Texas

General election defeats

There were 166 seats up for election in Texas. Overall, 151 incumbents advanced to the general election, including 68 Democrats and 83 Republicans. Of that total, three incumbents lost—one Democrat and two Republicans—representing 2.0% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Texas, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	62	1	1.6%	74	1	1.4%	136	2	1.5%
Senate	6	0	0.0%	9	1	11.1%	15	1	6.7%
Total	68	1	1.5%	83	2	2.4%	151	3	2.0%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Texas, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	71	21	29.6%	80	0	0.0%	151	21	13.9%
2012	52	0	0.0%	83	3	3.6%	135	3	2.2%
2014	55	2	3.6%	83	0	0.0%	138	2	1.4%
2016	53	0	0.0%	90	4	4.4%	144	5	3.5%
2018	52	0	0.0%	90	10	11.1%	142	10	7.0%
2020	68	1	1.5%	83	2	2.4%	151	3	2.0%

Primary defeats

There were 166 seats up for election in Texas. Overall, 155 incumbents filed for re-election, including 70 Democrats and 85 Republicans. Of that total, four incumbents lost in primaries—two Democrats and two Republicans—representing 2.6% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Texas, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	64	19	2	3.1%	76	11	2	2.6%	140	30	4	2.9%
Senate	6	2	0	0.0%	9	0	0	0.0%	15	2	0	0.0%
Total	70	21	2	2.9%	85	11	2	2.4%	155	32	4	2.6%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Texas, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	75	8	4	5.3%	82	20	3	3.7%	157	28	7	4.5%
2012	53	8	0	0.0%	94	43	11	11.7%	147	51	11	7.5%
2014	57	11	2	3.5%	93	28	9	9.7%	150	39	11	7.3%
2016	54	13	0	0.0%	95	33	5	5.3%	150	46	5	3.3%
2018	57	17	5	8.8%	94	33	4	4.3%	151	50	9	6.0%
2020	70	21	2	2.9%	85	11	2	2.4%	155	32	4	2.6%

Utah

General election defeats

There were 90 seats up for election in Utah. Overall, 74 incumbents advanced to the general election, including 15 Democrats and 59 Republicans. Of that total, one Republican incumbent lost, representing 1.4% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Utah, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	13	0	0.0%	50	1	2.0%	63	1	1.6%
Senate	2	0	0.0%	9	0	0.0%	11	0	0.0%
Total	15	0	0.0%	59	1	1.7%	74	1	1.4%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Utah, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	27	6	22.2%	52	0	0.0%	79	6	7.6%
2012	15	1	6.7%	55	1	1.8%	70	2	2.9%
2014	13	1	7.7%	61	0	0.0%	74	1	1.4%
2016	13	1	7.7%	63	1	1.6%	76	2	2.6%
2018	14	0	0.0%	53	1	1.9%	67	1	1.5%
2020	15	0	0.0%	59	1	1.7%	74	1	1.4%

Primary defeats

There were 90 seats up for election in Utah. Overall, 77 incumbents filed for re-election, including 15 Democrats and 62 Republicans. Of that total, three Republican incumbents lost in primaries, representing 3.9% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Utah, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	13	0	0	0.0%	52	8	2	3.8%	65	8	2	3.1%
Senate	2	0	0	0.0%	10	4	1	10.0%	12	4	1	8.3%
Total	15	0	0	0.0%	62	12	3	4.8%	77	12	3	3.9%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Utah, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	27	1	0	0.0%	54	8	2	3.7%	81	9	2	2.5%
2012	17	2	2	11.8%	61	12	6	9.8%	78	14	8	10.3%
2014	13	0	0	0.0%	64	4	3	4.7%	77	4	3	3.9%
2016	13	0	0	0.0%	63	6	3	4.8%	76	6	3	3.9%
2018	14	0	0	0.0%	51	3	0	0.0%	65	3	0	0.0%
2020	15	0	0	0.0%	62	12	3	4.8%	77	12	3	3.9%

Vermont

General election defeats

There were 180 seats up for election in Vermont. Overall, 156 incumbents advanced to the general election, including 104 Democrats, 44 Republicans, and eight independents. Of that total, 10 incumbents lost—five Democrats, one Republican, and four independents—representing 6.4% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Vermont, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	83	5	6.0%	39	1	2.6%	129	9	7.0%
Senate	21	0	0.0%	5	0	0.0%	27	1	3.7%
Total	104	5	4.8%	44	1	2.3%	156	10	6.4%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Vermont, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	106	4	3.8%	47	2	4.3%	158	6	3.8%
2012	106	3	2.8%	45	3	6.7%	155	6	3.9%
2014	105	11	10.5%	44	0	0.0%	152	11	7.2%
2016	88	6	6.8%	57	4	7.0%	151	10	6.6%
2018	91	1	1.1%	44	6	13.6%	145	10	6.9%
2020	104	5	4.8%	44	1	2.3%	156	10	6.4%

Primary defeats

There were 180 seats up for election in Vermont. Overall, 158 incumbents filed for re-election, including 106 Democrats and 44 Republicans. Of that total, two Democratic incumbents lost in primaries, representing 1.3% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Vermont, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	85	13	2	2.4%	39	4	0	0.0%	131	17	2	1.5%
Senate	21	9	0	0.0%	5	0	0	0.0%	27	9	0	0.0%
Total	106	22	2	1.9%	44	4	0	0.0%	158	26	2	1.3%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Vermont, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	107	8	0	0.0%	47	5	0	0.0%	159	13	0	0.0%
2012	105	11	0	0.0%	45	1	0	0.0%	155	12	0	0.0%
2014	105	5	0	0.0%	45	3	1	2.2%	153	8	1	0.7%
2016	88	23	0	0.0%	58	4	1	1.7%	152	27	1	0.7%
2018	88	15	2	2.3%	44	4	1	2.3%	148	19	3	2.0%
2020	106	22	2	1.9%	44	4	0	0.0%	158	26	2	1.3%

Washington

General election defeats

There were 123 seats up for election in Washington. Overall, 107 incumbents advanced to the general election, including 62 Democrats and 45 Republicans. Of that total, five incumbents lost—three Democrats and two Republicans—representing 4.7% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Washington, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	50	2	4.0%	35	1	2.9%	85	3	3.5%
Senate	12	1	8.3%	10	1	10.0%	22	2	9.1%
Total	62	3	4.8%	45	2	4.4%	107	5	4.7%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Washington, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	64	8	12.5%	38	1	2.6%	102	9	8.8%
2012	53	1	1.9%	44	2	4.5%	97	3	3.1%
2014	63	4	6.3%	47	0	0.0%	110	4	3.6%
2016	51	0	0.0%	51	3	5.9%	102	3	2.9%
2018	58	1	1.7%	46	8	17.4%	104	9	8.7%
2020	62	3	4.8%	45	2	4.4%	107	5	4.7%

Primary defeats

There were 123 seats up for election in Washington. Overall, 107 incumbents filed for re-election, including 62 Democrats and 45 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Washington, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	50	23	0	0.0%	35	11	0	0.0%	85	34	0	0.0%
Senate	12	2	0	0.0%	10	2	0	0.0%	22	4	0	0.0%
Total	62	25	0	0.0%	45	13	0	0.0%	107	38	0	0.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Washington, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	65	21	1	1.5%	38	3	0	0.0%	103	24	1	1.0%
2012	53	10	0	0.0%	45	5	1	2.2%	98	15	1	1.0%
2014	63	15	0	0.0%	48	8	1	2.1%	111	23	1	0.9%
2016	52	16	1	1.9%	51	16	0	0.0%	103	32	1	1.0%
2018	59	16	1	1.7%	47	18	1	2.1%	106	34	2	1.9%
2020	62	25	0	0.0%	45	13	0	0.0%	107	38	0	0.0%

West Virginia

General election defeats

There were 117 seats up for election in West Virginia. Overall, 84 incumbents advanced to the general election, including 33 Democrats and 51 Republicans. Of that total, 11 Democratic incumbents lost, representing 13.1% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in West Virginia, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	30	10	33.3%	44	0	0.0%	74	10	13.5%
Senate	3	1	33.3%	7	0	0.0%	10	1	10.0%
Total	33	11	33.3%	51	0	0.0%	84	11	13.1%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in West Virginia, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	74	5	6.8%	25	0	0.0%	99	5	5.1%
2012	64	7	10.9%	32	1	3.1%	96	8	8.3%
2014	54	22	40.7%	44	1	2.3%	98	23	23.5%
2016	34	8	23.5%	56	6	10.7%	90	14	15.6%
2018	37	4	10.8%	56	9	16.1%	94	14	14.9%
2020	33	11	33.3%	51	0	0.0%	84	11	13.1%

Primary defeats

There were 117 seats up for election in West Virginia. Overall, 93 incumbents filed for re-election, including 33 Democrats and 60 Republicans. Of that total, 10 Republican incumbents lost in primaries, representing 10.8% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in West Virginia, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	30	14	0	0.0%	50	24	7	14.0%	80	38	7	8.8%
Senate	3	0	0	0.0%	10	7	3	30.0%	13	7	3	23.1%
Total	33	14	0	0.0%	60	31	10	16.7%	93	45	10	10.8%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in West Virginia, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	76	46	2	2.6%	27	6	1	3.7%	103	52	3	2.9%
2012	66	37	2	3.0%	32	8	0	0.0%	98	45	2	2.0%
2014	60	19	6	10.0%	46	15	1	2.2%	106	34	7	6.6%
2016	35	20	1	2.9%	58	18	1	1.7%	93	38	2	2.2%
2018	38	15	1	2.6%	60	25	4	6.7%	99	40	5	5.1%
2020	33	14	0	0.0%	60	31	10	16.7%	93	45	10	10.8%

Wisconsin

General election defeats

There were 115 seats up for election in Wisconsin. Overall, 94 incumbents advanced to the general election, including 32 Democrats and 62 Republicans. Of that total, three incumbents lost—one Democrats and two Republicans—representing 3.2% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Wisconsin, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	28	0	0.0%	57	2	3.5%	85	2	2.4%
Senate	4	1	25.0%	5	0	0.0%	9	1	11.1%
Total	32	1	3.1%	62	2	3.2%	94	3	3.2%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Wisconsin, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	51	13	25.5%	40	0	0.0%	92	13	14.1%
2012	34	2	5.9%	58	3	5.2%	92	5	5.4%
2014	36	3	8.3%	51	0	0.0%	87	3	3.4%
2016	39	2	5.1%	63	0	0.0%	102	2	2.0%
2018	35	1	2.9%	63	0	0.0%	98	1	1.0%
2020	32	1	3.1%	62	2	3.2%	94	3	3.2%

Primary defeats

There were 115 seats up for election in Wisconsin. Overall, 95 incumbents filed for re-election, including 33 Democrats and 62 Republicans. Of that total, one Democratic incumbent lost in a primary, representing 1.1% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Wisconsin, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	29	4	1	3.4%	57	4	0	0.0%	86	8	1	1.2%
Senate	4	1	0	0.0%	5	0	0	0.0%	9	1	0	0.0%
Total	33	5	1	3.0%	62	4	0	0.0%	95	9	1	1.1%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Wisconsin, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	52	6	1	1.9%	40	7	0	0.0%	93	13	1	1.1%
2012	36	9	2	5.6%	58	6	0	0.0%	94	15	2	2.1%
2014	36	2	0	0.0%	51	1	0	0.0%	87	3	0	0.0%
2016	39	8	0	0.0%	63	0	0	0.0%	102	8	0	0.0%
2018	37	3	2	5.4%	63	1	0	0.0%	100	4	2	2.0%
2020	33	5	1	3.0%	62	4	0	0.0%	95	9	1	1.1%

Wyoming

General election defeats

There were 75 seats up for election in Wyoming. Overall, 54 incumbents advanced to the general election, including seven Democrats, 46 Republicans, and one independent. Of that total, three Democratic incumbents lost, representing 5.6% of incumbents who advanced to the general election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Wyoming, 2020
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	6	2	33.3%	37	0	0.0%	44	2	4.5%
Senate	1	1	100.0%	9	0	0.0%	10	1	10.0%
Total	7	3	42.9%	46	0	0.0%	54	3	5.6%

Historical general election defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Wyoming, 2010-2020
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	18	7	38.9%	42	0	0.0%	60	7	11.7%
2012	9	1	11.1%	48	0	0.0%	57	1	1.8%
2014	9	0	0.0%	51	1	2.0%	60	1	1.7%
2016	9	2	22.2%	44	1	2.3%	53	3	5.7%
2018	9	2	22.2%	53	2	3.8%	62	4	6.5%
2020	7	3	42.9%	46	0	0.0%	54	3	5.6%

Primary defeats

There were 75 seats up for election in Wyoming. Overall, 60 incumbents filed for re-election, including 7 Democrats and 52 Republicans. Of that total, six Republican incumbents lost in primaries, representing 10.0% of incumbents who filed for re-election.

Statistics from 2020 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Wyoming, 2020
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	6	1	0	0.0%	42	24	5	11.9%	49	25	5	10.2%
Senate	1	0	0	0.0%	10	6	1	10.0%	11	6	1	9.1%
Total	7	1	0	0.0%	52	30	6	11.5%	60	31	6	10.0%

Historical primary defeat statistics are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Wyoming, 2010-2020
Year
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
2010	18	0	0	0.0%	42	15	0	0.0%	60	15	0	0.0%
2012	9	0	0	0.0%	51	21	3	5.9%	60	21	3	5.0%
2014	9	0	0	0.0%	55	26	4	7.3%	64	26	4	6.3%
2016	9	0	0	0.0%	46	20	3	6.5%	55	20	3	5.5%
2018	9	0	0	0.0%	56	19	3	5.4%	65	19	3	4.6%
2020	7	1	0	0.0%	52	30	6	11.5%	60	31	6	10.0%

See also

• State legislative elections, 2020
  • Impact of term limits on state legislative elections in 2020
  • Open seats in state legislative elections, 2020
  • Contested state legislative primaries, 2020
  • State legislative incumbents in contested primaries, 2020
  • Major party competition in state legislative elections, 2020
  • State legislative incumbents without general election challengers, 2020
• Primary election competitiveness in state and federal government, 2020

Footnotes

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Editorial Content

Josh Altic, Director of Content • Daniel Anderson, Associate Director of Elections & Data • Cory Eucalitto, Associate Director of Features • Ryan Byrne, Managing Editor of Ballot Measures • Mandy McConnell, Managing Editor of News • Doug Kronaizl, Managing Editor of Local Expansion • Abbey Smith, Managing Editor of Elections • Janie Valentine, Managing Editor of Law • Joel Williams. Managing Editor of Events • Andrew Bahl • Jaclyn Beran • Marielle Bricker • Joseph Brusgard • Emma Burlingame • Kelly Coyle • Jon Dunn • Thomas Ellis • Nicole Fisher • Joseph Greaney • Thomas Grobben • Jaime Healy-Plotkin • Brianna Hosea • Molly Kehoe • Tyler King • Glorie Martinez • Norm Leahy, Senior Editor • Nathan Maxwell • Jimmy McAllister • Brandon McCauley • Ellie Mikus • Ellen Morrissey • Mackenzie Murphy • Kaley Platek • Samantha Post • Adam Powell • Annelise Reinwald • Ethan Rice • Spencer Richardson • Victoria Rose • Briana Ryan • Myj Saintyl • Maddy Salucka • Emma Soukup • Alexis Thacker • Mina Vogel • Samuel Wonacott • Trenton Woodcox