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2012 State Legislative Competitiveness

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2012 elections
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There were 6,013 state legislative seats up for election on November 6, 2012, 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.^[1]

In 2012, 484 incumbents lost their re-election bids: 287 in general elections and 197 in primaries.^[2] While Democratic incumbents accounted for 89% of all defeats in 2010, Republican incumbents made up 70% of all defeats in 2012.

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, 287 incumbents lost to challengers, 6.3% of incumbents running for re-election. This was down from 495 general election defeats in 2010.

In 2012 general elections:

71 Democratic incumbents lost, 3.4% of the 2,087 Democratic incumbents who ran and 5.6% of the 1,278 contested Democratic incumbents.

214 Republican incumbents lost, 8.6% of the 2,477 Republican incumbents who ran and 13.4% of the 1,601 contested Republican incumbents.

Two minor party or independent incumbents lost, 18.2% of the 11 minor party or independent incumbents who ran and 22.2% of the nine contested minor party or independent incumbents.

The total number of incumbents defeated in general elections—287—represented a 42% decrease from 2010.

In 2012

Click [show] on the table below to view general election incumbent defeat statistics by state in 2012. Hover over column headings to learn more about their contents.

State legislative incumbents defeated in general elections, 2012
State
	Democratic			Republican			Total
	Filed	Def.	%	Filed	Def.	%	Filed	Def.	%
Nationwide	2,087	71	3.4%	2,477	214	8.6%	4,575	287	6.3%
Alaska	21	6	28.6%	30	2	6.7%	52	9	17.3%
Arizona	17	0	0.0%	40	4	10.0%	57	4	7.0%
Arkansas	38	3	7.9%	47	3	6.4%	85	6	7.1%
California	36	2	5.6%	20	1	5.0%	56	3	5.4%
Colorado	29	0	0.0%	22	4	18.2%	51	4	7.8%
Connecticut	100	1	1.0%	59	3	5.1%	159	4	2.5%
Delaware	34	1	2.9%	16	2	12.5%	50	3	6.0%
Florida	29	0	0.0%	77	5	6.5%	106	5	4.7%
Georgia	67	3	4.5%	128	0	0.0%	196	3	1.5%
Hawaii	60	1	1.7%	6	2	33.3%	66	3	4.5%
Idaho	11	0	0.0%	55	2	3.6%	66	2	3.0%
Illinois	81	0	0.0%	58	5	8.6%	139	5	3.6%
Indiana	34	3	8.8%	68	2	2.9%	102	5	4.9%
Iowa	45	1	2.2%	51	7	13.7%	96	8	8.3%
Kansas	36	8	22.2%	71	6	8.5%	107	14	13.1%
Kentucky	63	3	4.8%	41	1	2.4%	104	4	3.8%
Maine	53	1	1.9%	66	16	24.2%	121	17	14.0%
Massachusetts	149	0	0.0%	35	2	5.7%	184	2	1.1%
Michigan	32	0	0.0%	55	5	9.1%	87	5	5.7%
Minnesota	71	0	0.0%	81	16	19.8%	152	16	10.5%
Missouri	36	2	5.6%	82	4	4.9%	118	6	5.1%
Montana	26	1	3.8%	53	7	13.2%	79	8	10.1%
Nebraska	6	1	16.7%	10	0	0.0%	16	1	6.3%
Nevada	23	1	4.3%	11	0	0.0%	34	1	2.9%
New Hampshire	82	4	4.9%	211	74	35.1%	293	78	26.6%
New Mexico	45	4	8.9%	39	3	7.7%	85	8	9.4%
New York	116	0	0.0%	71	4	5.6%	187	4	2.1%
North Carolina	47	5	10.6%	70	1	1.4%	117	6	5.1%
North Dakota	18	4	22.2%	39	2	5.1%	57	6	10.5%
Ohio	35	0	0.0%	65	2	3.1%	100	2	2.0%
Oklahoma	30	0	0.0%	71	0	0.0%	101	0	0.0%
Oregon	30	0	0.0%	34	4	11.8%	64	4	6.3%
Pennsylvania	83	0	0.0%	113	1	0.9%	196	1	0.5%
Rhode Island	78	0	0.0%	15	4	26.7%	94	4	4.3%
South Carolina	55	0	0.0%	89	2	2.2%	144	2	1.4%
South Dakota	13	0	0.0%	53	4	7.5%	66	4	6.1%
Tennessee	25	1	4.0%	60	1	1.7%	86	2	2.3%
Texas	52	0	0.0%	83	3	3.6%	135	3	2.2%
Utah	15	1	6.7%	55	1	1.8%	70	2	2.9%
Vermont	106	3	2.8%	45	3	6.7%	155	6	3.9%
Washington	53	1	1.9%	44	2	4.5%	97	3	3.1%
West Virginia	64	7	10.9%	32	1	3.1%	96	8	8.3%
Wisconsin	34	2	5.9%	58	3	5.2%	92	5	5.4%
Wyoming	9	1	11.1%	48	0	0.0%	57	1	1.8%

Historical comparison

The chart below shows a partisan breakdown of incumbents defeated in general elections between 2010 and 2012.

Click [show] on the table below to view general election incumbent defeat statistics by state between 2010 and 2012. Hover over column headings to learn more about their contents.

State legislative incumbents defeated in general elections, 2010 v. 2012
State
	2010		2012
	Def.	%	Def.	%
Nationwide	495	10.2%	287	6.3%
Alabama	22	19.5%	-	-
Alaska	3	6.7%	9	17.3%
Arizona	6	12.8%	4	7.0%
Arkansas	6	9.5%	6	7.1%
California	0	0.0%	3	5.4%
Colorado	7	10.9%	4	7.8%
Connecticut	13	7.8%	4	2.5%
Delaware	3	6.4%	3	6.0%
Florida	5	5.3%	5	4.7%
Georgia	3	1.6%	3	1.5%
Hawaii	1	1.8%	3	4.5%
Idaho	2	2.2%	2	3.0%
Illinois	7	5.6%	5	3.6%
Indiana	10	9.0%	5	4.9%
Iowa	18	17.1%	8	8.3%
Kansas	13	11.8%	14	13.1%
Kentucky	8	7.3%	4	3.8%
Maine	20	14.4%	17	14.0%
Maryland	3	2.0%	-	-
Massachusetts	10	6.1%	2	1.1%
Michigan	9	13.2%	5	5.7%
Minnesota	34	19.4%	16	10.5%
Missouri	12	11.8%	6	5.1%
Montana	10	13.7%	8	10.1%
Nebraska	2	9.5%	1	6.3%
Nevada	2	8.0%	1	2.9%
New Hampshire	88	28.3%	78	26.6%
New Mexico	7	10.8%	8	9.4%
New York	11	6.0%	4	2.1%
North Carolina	20	13.7%	6	5.1%
North Dakota	12	21.1%	6	10.5%
Ohio	13	15.1%	2	2.0%
Oklahoma	6	5.9%	0	0.0%
Oregon	4	5.9%	4	6.3%
Pennsylvania	9	4.3%	1	0.5%
Rhode Island	4	4.5%	4	4.3%
South Carolina	3	2.8%	2	1.4%
South Dakota	9	13.0%	4	6.1%
Tennessee	13	12.5%	2	2.3%
Texas	21	13.9%	3	2.2%
Utah	6	7.6%	2	2.9%
Vermont	6	3.8%	6	3.9%
Washington	9	8.8%	3	3.1%
West Virginia	5	5.1%	8	8.3%
Wisconsin	13	14.1%	5	5.4%
Wyoming	7	11.7%	1	1.8%

Incumbents defeated in primaries

In state legislative primaries, 197 incumbents lost to challengers, 4.1% of incumbents running for re-election. This was up from 116 primary defeats in 2010.

In 2012 primaries:

74 Democratic incumbents lost, 3.4% of the 2,170 Democratic incumbents who ran and 16.4% of the 450 contested Democratic incumbents.

123 Republican incumbents lost, 4.7% of the 2,608 Republican incumbents who ran and 18.4% of the 667 contested Republican incumbents.

The total number of incumbents defeated in primaries—197—represented a 70% increase from 2010.

In 2012

Click [show] on the table below to view primary incumbent defeat statistics by state in 2012. Hover over column headings to learn more about their contents.

State legislative incumbents defeated in primaries, 2012
State
	Democratic			Republican			Total
	Filed	Def.	%	Filed	Def.	%	Filed	Def.	%
Nationwide	2,170	74	3.4%	2,608	123	4.7%	4,790	197	4.1%
Alaska	21	0	0.0%	32	2	6.3%	54	2	3.7%
Arizona	17	0	0.0%	43	3	7.0%	60	3	5.0%
Arkansas	40	1	2.5%	48	1	2.1%	88	2	2.3%
California	36	0	0.0%	20	0	0.0%	56	0	0.0%
Colorado	29	0	0.0%	24	2	8.3%	53	2	3.8%
Connecticut	104	4	3.8%	59	0	0.0%	163	4	2.5%
Delaware	35	1	2.9%	18	2	11.1%	53	3	5.7%
Florida	31	2	6.5%	79	1	1.3%	110	3	2.7%
Georgia	73	6	8.2%	136	6	4.4%	210	12	5.7%
Hawaii	64	4	6.3%	7	1	14.3%	71	5	7.0%
Idaho	11	0	0.0%	59	3	5.1%	70	3	4.3%
Illinois	82	1	1.2%	63	5	7.9%	145	6	4.1%
Indiana	35	0	0.0%	68	0	0.0%	103	0	0.0%
Iowa	45	0	0.0%	55	3	5.5%	100	3	3.0%
Kansas	37	1	2.7%	90	19	21.1%	127	20	15.7%
Kentucky	64	1	1.6%	42	0	0.0%	106	1	0.9%
Maine	54	0	0.0%	67	0	0.0%	123	0	0.0%
Massachusetts	154	4	2.6%	36	0	0.0%	190	4	2.1%
Michigan	36	4	11.1%	56	1	1.8%	92	5	5.4%
Minnesota	72	0	0.0%	82	1	1.2%	154	1	0.6%
Missouri	43	7	16.3%	83	1	1.2%	126	8	6.3%
Montana	26	1	3.8%	56	3	5.4%	82	4	4.9%
Nebraska	6	0	0.0%	10	0	0.0%	16	0	0.0%
Nevada	24	1	4.2%	12	1	8.3%	36	2	5.6%
New Hampshire	85	3	3.5%	230	19	8.3%	315	22	7.0%
New Mexico	50	4	8.0%	40	1	2.5%	91	5	5.5%
New York	118	2	1.7%	71	0	0.0%	189	2	1.1%
North Carolina	50	2	4.0%	77	5	6.5%	127	7	5.5%
North Dakota	18	0	0.0%	43	4	9.3%	61	4	6.6%
Ohio	36	0	0.0%	62	1	1.6%	98	1	1.0%
Oklahoma	30	0	0.0%	72	1	1.4%	102	1	1.0%
Oregon	31	1	3.2%	35	1	2.9%	66	2	3.0%
Pennsylvania	88	4	4.5%	115	1	0.9%	203	5	2.5%
Rhode Island	84	6	7.1%	15	0	0.0%	100	6	6.0%
South Carolina	57	2	3.5%	91	3	3.3%	148	5	3.4%
South Dakota	15	1	6.7%	59	4	6.8%	74	5	6.8%
Tennessee	30	5	16.7%	67	7	10.4%	98	12	12.2%
Texas	53	0	0.0%	94	11	11.7%	147	11	7.5%
Utah	17	2	11.8%	61	6	9.8%	78	8	10.3%
Vermont	105	0	0.0%	45	0	0.0%	155	0	0.0%
Washington	53	0	0.0%	45	1	2.2%	98	1	1.0%
West Virginia	66	2	3.0%	32	0	0.0%	98	2	2.0%
Wisconsin	36	2	5.6%	58	0	0.0%	94	2	2.1%
Wyoming	9	0	0.0%	51	3	5.9%	60	3	5.0%

Historical comparison

The chart below shows a partisan breakdown of incumbents defeated in primaries between 2010 and 2012.

Click [show] on the table below to view primary incumbent defeat statistics by state between 2010 and 2012. Hover over column headings to learn more about their contents.

State legislative incumbents defeated in primaries, 2010 v. 2012
State
	2010		2012
	Def.	%	Def.	%
Nationwide	116	2.3%	197	4.1%
Alabama	6	5.0%	-	-
Alaska	0	0.0%	2	3.7%
Arizona	4	7.8%	3	5.0%
Arkansas	1	1.6%	2	2.3%
California	0	0.0%	0	0.0%
Colorado	0	0.0%	2	3.8%
Connecticut	1	0.6%	4	2.5%
Delaware	1	2.1%	3	5.7%
Florida	1	1.0%	3	2.7%
Georgia	5	2.5%	12	5.7%
Hawaii	1	1.7%	5	7.0%
Idaho	6	6.3%	3	4.3%
Illinois	1	0.8%	6	4.1%
Indiana	2	1.8%	0	0.0%
Iowa	2	1.9%	3	3.0%
Kansas	5	4.3%	20	15.7%
Kentucky	2	1.8%	1	0.9%
Maine	1	0.7%	0	0.0%
Maryland	11	6.8%	-	-
Massachusetts	1	0.6%	4	2.1%
Michigan	0	0.0%	5	5.4%
Minnesota	2	1.1%	1	0.6%
Missouri	3	2.9%	8	6.3%
Montana	2	2.7%	4	4.9%
Nebraska	0	0.0%	0	0.0%
Nevada	1	3.8%	2	5.6%
New Hampshire	11	3.4%	22	7.0%
New Mexico	2	3.0%	5	5.5%
New York	4	2.1%	2	1.1%
North Carolina	5	3.3%	7	5.5%
North Dakota	0	0.0%	4	6.6%
Ohio	1	1.1%	1	1.0%
Oklahoma	1	1.0%	1	1.0%
Oregon	0	0.0%	2	3.0%
Pennsylvania	1	0.5%	5	2.5%
Rhode Island	10	10.2%	6	6.0%
South Carolina	5	4.5%	5	3.4%
South Dakota	1	1.4%	5	6.8%
Tennessee	2	1.9%	12	12.2%
Texas	7	4.5%	11	7.5%
Utah	2	2.5%	8	10.3%
Vermont	0	0.0%	0	0.0%
Washington	1	1.0%	1	1.0%
West Virginia	3	2.9%	2	2.0%
Wisconsin	1	1.1%	2	2.1%
Wyoming	0	0.0%	3	5.0%

By state

Overview

General elections

Primaries

Alaska

General election defeats

There were 59 seats up for election in Alaska. Overall, 52 incumbents advanced to the general election, including 21 Democrats, 30 Republicans, and one minor party or independent incumbent. Of that total, nine incumbents lost—six Democrats, two Republicans, and one minor party or independent incumbent—representing 17.3% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Alaska, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	12	2	16.7%	22	2	9.1%	35	5^[3]	14.3%
Senate	9	4	44.4%	8	0	0.0%	17	4	23.5%
Total	21	6	28.6%	30	2	6.7%	52	9^[3]	17.3%

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

Incumbents defeated in general elections in Alaska, 2010-2012
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^[3]	17.3%

Primary defeats

There were 59 seats up for election in Alaska. Overall, 54 incumbents filed for re-election, including 21 Democrats and 32 Republicans. Of that total, two Republican incumbents lost in primaries, representing 3.7% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Alaska, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	12	2	0	0.0%	22	9	0	0.0%	35	11	0	0.0%
Senate	9	1	0	0.0%	10	4	2	20.0%	19	5	2	10.5%
Total	21	3	0	0.0%	32	13	2	6.3%	54	16	2	3.7%

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

Incumbents defeated in primaries in Alaska, 2010-2012
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%

Arizona

General election defeats

There were 90 seats up for election in Arizona. Overall, 57 incumbents advanced to the general election, including 17 Democrats and 40 Republicans. Of that total, four Republican incumbents lost, representing 7.0% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Arizona, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	11	0	0.0%	25	2	8.0%	36	2	5.6%
Senate	6	0	0.0%	15	2	13.3%	21	2	9.5%
Total	17	0	0.0%	40	4	10.0%	57	4	7.0%

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

Incumbents defeated in general elections in Arizona, 2010-2012
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%

Primary defeats

There were 90 seats up for election in Arizona. Overall, 60 incumbents filed for re-election, including 17 Democrats and 43 Republicans. Of that total, three Republican incumbents lost in primaries, representing 5.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Arizona, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	11	8	0	0.0%	27	10	2	7.4%	38	18	2	5.3%
Senate	6	3	0	0.0%	16	3	1	6.3%	22	6	1	4.5%
Total	17	11	0	0.0%	43	13	3	7.0%	60	24	3	5.0%

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

Incumbents defeated in primaries in Arizona, 2010-2012
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%

Arkansas

General election defeats

There were 135 seats up for election in Arkansas. Overall, 85 incumbents advanced to the general election, including 38 Democrats and 47 Republicans. Of that total, six incumbents lost—three Democrats and three Republicans—representing 7.1% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Arkansas, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	27	1	3.7%	36	3	8.3%	63	4	6.3%
Senate	11	2	18.2%	11	0	0.0%	22	2	9.1%
Total	38	3	7.9%	47	3	6.4%	85	6	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 Arkansas, 2010-2012
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%

Primary defeats

There were 135 seats up for election in Arkansas. Overall, 88 incumbents filed for re-election, including 40 Democrats and 48 Republicans. Of that total, two incumbents lost in primaries—one Democrat and one Republican—representing 2.3% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Arkansas, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	28	2	0	0.0%	36	4	0	0.0%	64	6	0	0.0%
Senate	12	4	1	8.3%	12	2	1	8.3%	24	6	2	8.3%
Total	40	6	1	2.5%	48	6	1	2.1%	88	12	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 Arkansas, 2010-2012
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%

California

General election defeats

There were 100 seats up for election in California. Overall, 56 incumbents advanced to the general election, including 36 Democrats and 20 Republicans. Of that total, three incumbents lost—two Democrats and one Republican—representing 5.4% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in California, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	29	2	6.9%	16	1	6.3%	45	3	6.7%
Senate	7	0	0.0%	4	0	0.0%	11	0	0.0%
Total	36	2	5.6%	20	1	5.0%	56	3	5.4%

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, 2010-2012
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%

Primary defeats

There were 100 seats up for election in California. Overall, 56 incumbents filed for re-election, including 36 Democrats and 20 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in California, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	29	11	0	0.0%	16	6	0	0.0%	45	17	0	0.0%
Senate	7	4	0	0.0%	4	1	0	0.0%	11	5	0	0.0%
Total	36	15	0	0.0%	20	7	0	0.0%	56	22	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 California, 2010-2012
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%

Colorado

General election defeats

There were 85 seats up for election in Colorado. Overall, 51 incumbents advanced to the general election, including 29 Democrats and 22 Republicans. Of that total, four Republican incumbents lost, representing 7.8% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Colorado, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	21	0	0.0%	20	4	20.0%	41	4	9.8%
Senate	8	0	0.0%	2	0	0.0%	10	0	0.0%
Total	29	0	0.0%	22	4	18.2%	51	4	7.8%

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

Incumbents defeated in general elections in Colorado, 2010-2012
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	37	6	16.2%	26	0	0.0%	64	7^[3]	10.9%
2012	29	0	0.0%	22	4	18.2%	51	4	7.8%

Primary defeats

There were 85 seats up for election in Colorado. Overall, 53 incumbents filed for re-election, including 29 Democrats and 24 Republicans. Of that total, two Republican incumbents lost in primaries, representing 3.8% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Colorado, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	21	1	0	0.0%	21	2	1	4.8%	42	3	1	2.4%
Senate	8	0	0	0.0%	3	1	1	33.3%	11	1	1	9.1%
Total	29	1	0	0.0%	24	3	2	8.3%	53	4	2	3.8%

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

Incumbents defeated in primaries in Colorado, 2010-2012
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%

Connecticut

General election defeats

There were 187 seats up for election in Connecticut. Overall, 159 incumbents advanced to the general election, including 100 Democrats and 59 Republicans. Of that total, four incumbents lost—one Democrat and three Republicans—representing 2.5% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Connecticut, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	81	1	1.2%	46	2	4.3%	127	3	2.4%
Senate	19	0	0.0%	13	1	7.7%	32	1	3.1%
Total	100	1	1.0%	59	3	5.1%	159	4	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 Connecticut, 2010-2012
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%

Primary defeats

There were 187 seats up for election in Connecticut. Overall, 163 incumbents filed for re-election, including 104 Democrats and 59 Republicans. Of that total, four Democratic incumbents lost in primaries, representing 2.5% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Connecticut, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	84	5	3	3.6%	46	1	0	0.0%	130	6	3	2.3%
Senate	20	1	1	5.0%	13	0	0	0.0%	33	1	1	3.0%
Total	104	6	4	3.8%	59	1	0	0.0%	163	7	4	2.5%

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

Incumbents defeated in primaries in Connecticut, 2010-2012
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%

Delaware

General election defeats

There were 62 seats up for election in Delaware. Overall, 50 incumbents advanced to the general election, including 34 Democrats and 16 Republicans. Of that total, three incumbents lost—one Democrat and two Republicans—representing 6.0% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Delaware, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	22	0	0.0%	11	1	9.1%	33	1	3.0%
Senate	12	1	8.3%	5	1	20.0%	17	2	11.8%
Total	34	1	2.9%	16	2	12.5%	50	3	6.0%

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

Incumbents defeated in general elections in Delaware, 2010-2012
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%

Primary defeats

There were 62 seats up for election in Delaware. Overall, 53 incumbents filed for re-election, including 35 Democrats and 18 Republicans. Of that total, three incumbents lost in primaries—one Democrat and two Republicans—representing 5.7% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Delaware, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	22	3	0	0.0%	12	3	1	8.3%	34	6	1	2.9%
Senate	13	3	1	7.7%	6	2	1	16.7%	19	5	2	10.5%
Total	35	6	1	2.9%	18	5	2	11.1%	53	11	3	5.7%

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

Incumbents defeated in primaries in Delaware, 2010-2012
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%

Florida

General election defeats

There were 160 seats up for election in Florida. Overall, 106 incumbents advanced to the general election, including 29 Democrats and 77 Republicans. Of that total, five Republican incumbents lost, representing 4.7% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Florida, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	20	0	0.0%	60	4	6.7%	80	4	5.0%
Senate	9	0	0.0%	17	1	5.9%	26	1	3.8%
Total	29	0	0.0%	77	5	6.5%	106	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 Florida, 2010-2012
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%

Primary defeats

There were 160 seats up for election in Florida. Overall, 110 incumbents filed for re-election, including 31 Democrats and 79 Republicans. Of that total, three incumbents lost in primaries—two Democrats and one Republican—representing 2.7% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Florida, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	22	7	2	9.1%	62	22	1	1.6%	84	29	3	3.6%
Senate	9	0	0	0.0%	17	2	0	0.0%	26	2	0	0.0%
Total	31	7	2	6.5%	79	24	1	1.3%	110	31	3	2.7%

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

Incumbents defeated in primaries in Florida, 2010-2012
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%

Georgia

General election defeats

There were 236 seats up for election in Georgia. Overall, 196 incumbents advanced to the general election, including 67 Democrats, 128 Republicans, and one minor party or independent incumbent. Of that total, three Democratic incumbents lost, representing 1.5% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Georgia, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	49	2	4.1%	95	0	0.0%	145	2	1.4%
Senate	18	1	5.6%	33	0	0.0%	51	1	2.0%
Total	67	3	4.5%	128	0	0.0%	196	3	1.5%

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

Incumbents defeated in general elections in Georgia, 2010-2012
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%

Primary defeats

There were 236 seats up for election in Georgia. Overall, 210 incumbents filed for re-election, including 73 Democrats and 136 Republicans. Of that total, 12 incumbents lost in primaries—six Democrats and six Republicans—representing 5.7% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Georgia, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	54	19	5	9.3%	101	16	5	5.0%	156	35	10	6.4%
Senate	19	6	1	5.3%	35	7	1	2.9%	54	13	2	3.7%
Total	73	25	6	8.2%	136	23	6	4.4%	210	48	12	5.7%

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

Incumbents defeated in primaries in Georgia, 2010-2012
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%

Hawaii

General election defeats

There were 76 seats up for election in Hawaii. Overall, 66 incumbents advanced to the general election, including 60 Democrats and six Republicans. Of that total, three incumbents lost—one Democrat and two Republicans—representing 4.5% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Hawaii, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	38	1	2.6%	5	2	40.0%	43	3	7.0%
Senate	22	0	0.0%	1	0	0.0%	23	0	0.0%
Total	60	1	1.7%	6	2	33.3%	66	3	4.5%

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

Incumbents defeated in general elections in Hawaii, 2010-2012
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%

Primary defeats

There were 76 seats up for election in Hawaii. Overall, 71 incumbents filed for re-election, including 64 Democrats and seven Republicans. Of that total, five incumbents lost in primaries—four Democrats and one Republican—representing 7.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Hawaii, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	40	16	2	5.0%	6	2	1	16.7%	46	18	3	6.5%
Senate	24	8	2	8.3%	1	0	0	0.0%	25	8	2	8.0%
Total	64	24	4	6.3%	7	2	1	14.3%	71	26	5	7.0%

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

Incumbents defeated in primaries in Hawaii, 2010-2012
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%

Idaho

General election defeats

There were 105 seats up for election in Idaho. Overall, 66 incumbents advanced to the general election, including 11 Democrats and 55 Republicans. Of that total, two Republican incumbents lost, representing 3.0% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Idaho, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	7	0	0.0%	34	1	2.9%	41	1	2.4%
Senate	4	0	0.0%	21	1	4.8%	25	1	4.0%
Total	11	0	0.0%	55	2	3.6%	66	2	3.0%

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

Incumbents defeated in general elections in Idaho, 2010-2012
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%

Primary defeats

There were 105 seats up for election in Idaho. Overall, 70 incumbents filed for re-election, including 11 Democrats and 59 Republicans. Of that total, three Republican incumbents lost in primaries, representing 4.3% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Idaho, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	7	1	0	0.0%	37	20	2	5.4%	44	21	2	4.5%
Senate	4	0	0	0.0%	22	13	1	4.5%	26	13	1	3.8%
Total	11	1	0	0.0%	59	33	3	5.1%	70	34	3	4.3%

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

Incumbents defeated in primaries in Idaho, 2010-2012
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%

Illinois

General election defeats

There were 177 seats up for election in Illinois. Overall, 139 incumbents advanced to the general election, including 81 Democrats and 58 Republicans. Of that total, five Republican incumbents lost, representing 3.6% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Illinois, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	52	0	0.0%	43	4	9.3%	95	4	4.2%
Senate	29	0	0.0%	15	1	6.7%	44	1	2.3%
Total	81	0	0.0%	58	5	8.6%	139	5	3.6%

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

Incumbents defeated in general elections in Illinois, 2010-2012
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%

Primary defeats

There were 177 seats up for election in Illinois. Overall, 145 incumbents filed for re-election, including 82 Democrats and 63 Republicans. Of that total, six incumbents lost in primaries—one Democrat and five Republicans—representing 4.1% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Illinois, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	53	13	0	0.0%	46	6	3	6.5%	99	19	3	3.0%
Senate	29	8	1	3.4%	17	6	2	11.8%	46	14	3	6.5%
Total	82	21	1	1.2%	63	12	5	7.9%	145	33	6	4.1%

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

Incumbents defeated in primaries in Illinois, 2010-2012
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%

Indiana

General election defeats

There were 125 seats up for election in Indiana. Overall, 102 incumbents advanced to the general election, including 34 Democrats and 68 Republicans. Of that total, five incumbents lost—three Democrats and two Republicans—representing 4.9% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Indiana, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	28	3	10.7%	52	2	3.8%	80	5	6.3%
Senate	6	0	0.0%	16	0	0.0%	22	0	0.0%
Total	34	3	8.8%	68	2	2.9%	102	5	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 Indiana, 2010-2012
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%

Primary defeats

There were 125 seats up for election in Indiana. Overall, 103 incumbents filed for re-election, including 35 Democrats and 68 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Indiana, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	28	3	0	0.0%	53	10	0	0.0%	81	13	0	0.0%
Senate	7	2	0	0.0%	15	2	0	0.0%	22	4	0	0.0%
Total	35	5	0	0.0%	68	12	0	0.0%	103	17	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 Indiana, 2010-2012
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%

Iowa

General election defeats

There were 126 seats up for election in Iowa. Overall, 96 incumbents advanced to the general election, including 45 Democrats and 51 Republicans. Of that total, eight incumbents lost—one Democrat and seven Republicans—representing 8.3% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Iowa, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	36	1	2.8%	44	5	11.4%	80	6	7.5%
Senate	9	0	0.0%	7	2	28.6%	16	2	12.5%
Total	45	1	2.2%	51	7	13.7%	96	8	8.3%

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

Incumbents defeated in general elections in Iowa, 2010-2012
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%

Primary defeats

There were 126 seats up for election in Iowa. Overall, 100 incumbents filed for re-election, including 45 Democrats and 55 Republicans. Of that total, three Republican incumbents lost in primaries, representing 3.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Iowa, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	36	0	0	0.0%	46	13	2	4.3%	82	13	2	2.4%
Senate	9	0	0	0.0%	9	3	1	11.1%	18	3	1	5.6%
Total	45	0	0	0.0%	55	16	3	5.5%	100	16	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 Iowa, 2010-2012
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%

Kansas

General election defeats

There were 165 seats up for election in Kansas. Overall, 107 incumbents advanced to the general election, including 36 Democrats and 71 Republicans. Of that total, 14 incumbents lost—eight Democrats and six Republicans—representing 13.1% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Kansas, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	28	6	21.4%	52	5	9.6%	80	11	13.8%
Senate	8	2	25.0%	19	1	5.3%	27	3	11.1%
Total	36	8	22.2%	71	6	8.5%	107	14	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 Kansas, 2010-2012
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%

Primary defeats

There were 165 seats up for election in kansas. Overall, 127 incumbents filed for re-election, including 37 Democrats and 90 Republicans. Of that total, 20 incumbents lost in primaries—one Democrat and 19 Republicans—representing 15.7% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in kansas, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	29	5	1	3.4%	62	29	10	16.1%	91	34	11	12.1%
Senate	8	1	0	0.0%	28	19	9	32.1%	36	20	9	25.0%
Total	37	6	1	2.7%	90	48	19	21.1%	127	54	20	15.7%

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

Incumbents defeated in primaries in kansas, 2010-2012
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%

Kentucky

General election defeats

There were 119 seats up for election in Kentucky. Overall, 104 incumbents advanced to the general election, including 63 Democrats and 41 Republicans. Of that total, four incumbents lost—three Democrats and one Republican—representing 3.8% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Kentucky, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	54	2	3.7%	36	1	2.8%	90	3	3.3%
Senate	9	1	11.1%	5	0	0.0%	14	1	7.1%
Total	63	3	4.8%	41	1	2.4%	104	4	3.8%

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

Incumbents defeated in general elections in Kentucky, 2010-2012
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%

Primary defeats

There were 119 seats up for election in Kentucky. Overall, 106 incumbents filed for re-election, including 64 Democrats and 42 Republicans. Of that total, one Democratic incumbent lost in a primary, representing 0.9% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Kentucky, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	55	10	1	1.8%	36	8	0	0.0%	91	18	1	1.1%
Senate	9	1	0	0.0%	6	3	0	0.0%	15	4	0	0.0%
Total	64	11	1	1.6%	42	11	0	0.0%	106	22	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 Kentucky, 2010-2012
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%

Maine

General election defeats

There were 186 seats up for election in Maine. Overall, 121 incumbents advanced to the general election, including 53 Democrats, 66 Republicans, and two minor party or independent incumbents. Of that total, 17 incumbents lost—one Democrat and 16 Republicans—representing 14.0% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Maine, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	45	1	2.2%	53	12	22.6%	99	13	13.1%
Senate	8	0	0.0%	13	4	30.8%	22	4	18.2%
Total	53	1	1.9%	66	16	24.2%	121	17	14.0%

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

Incumbents defeated in general elections in Maine, 2010-2012
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%

Primary defeats

There were 186 seats up for election in Maine. Overall, 123 incumbents filed for re-election, including 54 Democrats and 67 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Maine, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	46	4	0	0.0%	53	1	0	0.0%	100	5	0	0.0%
Senate	8	0	0	0.0%	14	0	0	0.0%	23	0	0	0.0%
Total	54	4	0	0.0%	67	1	0	0.0%	123	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 Maine, 2010-2012
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%

Massachusetts

General election defeats

There were 200 seats up for election in Massachusetts. Overall, 184 incumbents advanced to the general election, including 149 Democrats and 35 Republicans. Of that total, two Republican incumbents lost, representing 1.1% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Massachusetts, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	116	0	0.0%	31	2	6.5%	147	2	1.4%
Senate	33	0	0.0%	4	0	0.0%	37	0	0.0%
Total	149	0	0.0%	35	2	5.7%	184	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, 2010-2012
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%

Primary defeats

There were 200 seats up for election in Massachusetts. Overall, 190 incumbents filed for re-election, including 154 Democrats and 36 Republicans. Of that total, four Democratic incumbents lost in primaries, representing 2.1% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Massachusetts, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	121	14	4	3.3%	32	1	0	0.0%	153	15	4	2.6%
Senate	33	4	0	0.0%	4	0	0	0.0%	37	4	0	0.0%
Total	154	18	4	2.6%	36	1	0	0.0%	190	19	4	2.1%

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

Incumbents defeated in primaries in Massachusetts, 2010-2012
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%

Michigan

General election defeats

There were 110 seats up for election in Michigan. Overall, 87 incumbents advanced to the general election, including 32 Democrats and 55 Republicans. Of that total, five Republican incumbents lost, representing 5.7% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Michigan, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	32	0	0.0%	55	5	9.1%	87	5	5.7%
Senate	Did not hold elections.
Total	32	0	0.0%	55	5	9.1%	87	5	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 Michigan, 2010-2012
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%

Primary defeats

There were 110 seats up for election in Michigan. Overall, 92 incumbents filed for re-election, including 36 Democrats and 56 Republicans. Of that total, five incumbents lost in primaries—four Democrats and one Republican—representing 5.4% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Michigan, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	36	19	4	11.1%	56	18	1	1.8%	92	37	5	5.4%
Senate	Did not hold elections.
Total	36	19	4	11.1%	56	18	1	1.8%	92	37	5	5.4%

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

Incumbents defeated in primaries in Michigan, 2010-2012
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%

Minnesota

General election defeats

There were 201 seats up for election in Minnesota. Overall, 152 incumbents advanced to the general election, including 71 Democrats and 81 Republicans. Of that total, 16 Republican incumbents lost, representing 10.5% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Minnesota, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	46	0	0.0%	55	9	16.4%	101	9	8.9%
Senate	25	0	0.0%	26	7	26.9%	51	7	13.7%
Total	71	0	0.0%	81	16	19.8%	152	16	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 Minnesota, 2010-2012
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%

Primary defeats

There were 201 seats up for election in Minnesota. Overall, 154 incumbents filed for re-election, including 72 Democrats and 82 Republicans. Of that total, one Republican incumbent lost in a primary, representing 0.6% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Minnesota, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	47	2	0	0.0%	56	2	1	1.8%	103	4	1	1.0%
Senate	25	5	0	0.0%	26	2	0	0.0%	51	7	0	0.0%
Total	72	7	0	0.0%	82	4	1	1.2%	154	11	1	0.6%

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

Incumbents defeated in primaries in Minnesota, 2010-2012
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%

Missouri

General election defeats

There were 180 seats up for election in Missouri. Overall, 118 incumbents advanced to the general election, including 36 Democrats and 82 Republicans. Of that total, six incumbents lost—two Democrats and four Republicans—representing 5.1% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Missouri, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	35	2	5.7%	77	3	3.9%	112	5	4.5%
Senate	1	0	0.0%	5	1	20.0%	6	1	16.7%
Total	36	2	5.6%	82	4	4.9%	118	6	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 Missouri, 2010-2012
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%

Primary defeats

There were 180 seats up for election in Missouri. Overall, 126 incumbents filed for re-election, including 43 Democrats and 83 Republicans. Of that total, eight incumbents lost in primaries—seven Democrats and one Republican—representing 6.3% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Missouri, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	41	18	6	14.6%	78	15	1	1.3%	119	33	7	5.9%
Senate	2	1	1	50.0%	5	1	0	0.0%	7	2	1	14.3%
Total	43	19	7	16.3%	83	16	1	1.2%	126	35	8	6.3%

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

Incumbents defeated in primaries in Missouri, 2010-2012
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%

Montana

General election defeats

There were 126 seats up for election in Montana. Overall, 79 incumbents advanced to the general election, including 26 Democrats and 53 Republicans. Of that total, eight incumbents lost—one Democrat and seven Republicans—representing 10.1% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Montana, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	18	0	0.0%	48	7	14.6%	66	7	10.6%
Senate	8	1	12.5%	5	0	0.0%	13	1	7.7%
Total	26	1	3.8%	53	7	13.2%	79	8	10.1%

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

Incumbents defeated in general elections in Montana, 2010-2012
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%

Primary defeats

There were 126 seats up for election in Montana. Overall, 82 incumbents filed for re-election, including 26 Democrats and 56 Republicans. Of that total, four incumbents lost in primaries—one Democrat and three Republicans—representing 4.9% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Montana, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	18	2	1	5.6%	50	12	2	4.0%	68	14	3	4.4%
Senate	8	1	0	0.0%	6	2	1	16.7%	14	3	1	7.1%
Total	26	3	1	3.8%	56	14	3	5.4%	82	17	4	4.9%

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

Incumbents defeated in primaries in Montana, 2010-2012
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%

Nebraska

General election defeats

There were 25 seats up for election in Nebraska. Overall, 16 incumbents advanced to the general election, including six Democrats and 10 Republicans. Of that total, one Democratic incumbent lost, representing 6.3% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Nebraska, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	N/A
Senate	6	1	16.7%	10	0	0.0%	16	1	6.3%
Total	6	1	16.7%	10	0	0.0%	16	1	6.3%

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

Incumbents defeated in general elections in Nebraska, 2010-2012
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	10	1	10.0%	10	0	0.0%	21	2^[3]	9.5%
2012	6	1	16.7%	10	0	0.0%	16	1	6.3%

Primary defeats

There were 25 seats up for election in Nebraska. Overall, 16 incumbents filed for re-election, including six Democrats and 10 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Nebraska, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	N/A
Senate	6	2	0	0.0%	10	2	0	0.0%	16	4	0	0.0%
Total	6	2	0	0.0%	10	2	0	0.0%	16	4	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, 2010-2012
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%

Nevada

General election defeats

There were 52 seats up for election in Nevada. Overall, 34 incumbents advanced to the general election, including 23 Democrats and 11 Republicans. Of that total, one Democratic incumbent lost, representing 2.9% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Nevada, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	22	1	4.5%	10	0	0.0%	32	1	3.1%
Senate	1	0	0.0%	1	0	0.0%	2	0	0.0%
Total	23	1	4.3%	11	0	0.0%	34	1	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 Nevada, 2010-2012
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%

Primary defeats

There were 52 seats up for election in Nevada. Overall, 36 incumbents filed for re-election, including 24 Democrats and 12 Republicans. Of that total, two incumbents lost in primaries—one Democrat and one Republican—representing 5.6% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Nevada, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	22	9	0	0.0%	11	2	1	9.1%	33	11	1	3.0%
Senate	2	1	1	50.0%	1	0	0	0.0%	3	1	1	33.3%
Total	24	10	1	4.2%	12	2	1	8.3%	36	12	2	5.6%

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

Incumbents defeated in primaries in Nevada, 2010-2012
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%

New Hampshire

General election defeats

There were 424 seats up for election in New Hampshire. Overall, 293 incumbents advanced to the general election, including 82 Democrats and 211 Republicans. Of that total, 78 incumbents lost—four Democrats and 74 Republicans—representing 26.6% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in New Hampshire, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	79	4	5.1%	200	73	36.5%	279	77	27.6%
Senate	3	0	0.0%	11	1	9.1%	14	1	7.1%
Total	82	4	4.9%	211	74	35.1%	293	78	26.6%

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

Incumbents defeated in general elections in New Hampshire, 2010-2012
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%

Primary defeats

There were 424 seats up for election in New Hampshire. Overall, 315 incumbents filed for re-election, including 85 Democrats and 230 Republicans. Of that total, 22 incumbents lost in primaries—three Democrats and 19 Republicans—representing 7.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in New Hampshire, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	82	14	3	3.7%	219	129	19	8.7%	301	143	22	7.3%
Senate	3	0	0	0.0%	11	2	0	0.0%	14	2	0	0.0%
Total	85	14	3	3.5%	230	*131*	19	8.3%	315	*145*	22	7.0%

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

Incumbents defeated in primaries in New Hampshire, 2010-2012
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%

New Mexico

General election defeats

There were 112 seats up for election in New Mexico. Overall, 85 incumbents advanced to the general election, including 45 Democrats, 39 Republicans, and one minor party or independent incumbents. Of that total, eight incumbents lost—four Democrats, three Republicans, and one minor party or independent incumbent—representing 9.4% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in New Mexico, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	25	1	4.0%	29	3	10.3%	55	5^[3]	9.1%
Senate	20	3	15.0%	10	0	0.0%	30	3	10.0%
Total	45	4	8.9%	39	3	7.7%	85	8^[3]	9.4%

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

Incumbents defeated in general elections in New Mexico, 2010-2012
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^[3]	9.4%

Primary defeats

There were 112 seats up for election in New Mexico. Overall, 91 incumbents filed for re-election, including 50 Democrats and 40 Republicans. Of that total, five incumbents lost in primaries—four Democrats and one Republican—representing 5.5% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in New Mexico, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	27	9	2	7.4%	30	5	1	3.3%	58	14	3	5.2%
Senate	23	10	2	8.7%	10	0	0	0.0%	33	10	2	6.1%
Total	50	19	4	8.0%	40	5	1	2.5%	91	24	5	5.5%

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

Incumbents defeated in primaries in New Mexico, 2010-2012
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%

New York

General election defeats

There were 213 seats up for election in New York. Overall, 187 incumbents advanced to the general election, including 116 Democrats and 71 Republicans. Of that total, four Republican incumbents lost, representing 2.1% of incumbents who advanced to the general election.^[4]

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in New York, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	90	0	0.0%	40	3	7.5%	130	3	2.3%
Senate	26	0	0.0%	31	1	3.2%	57	1	1.8%
Total	116	0	0.0%	71	4	5.6%	187	4	2.1%

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 York, 2010-2012
Year
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
2010	124	10	8.1%	59	1	1.7%	183	11^[5]	6.0%
2012	116	0	0.0%	71	4	5.6%	187	4^[4]	2.1%

Primary defeats

There were 213 seats up for election in New York. Overall, 189 incumbents filed for re-election, including 118 Democrats and 71 Republicans. Of that total, two Democratic incumbents lost in primaries, representing 1.1% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in New York, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	91	18	1	1.1%	40	4	0	0.0%	131	22	1	0.8%
Senate	27	6	1	3.7%	31	5	0	0.0%	58	11	1	1.7%
Total	118	24	2	1.7%	71	9	0	0.0%	189	33	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 New York, 2010-2012
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%

North Carolina

General election defeats

There were 170 seats up for election in North Carolina. Overall, 117 incumbents advanced to the general election, including 47 Democrats and 70 Republicans. Of that total, six incumbents lost—five Democrats and one Republican—representing 5.1% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in North Carolina, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	34	3	8.8%	46	1	2.2%	80	4	5.0%
Senate	13	2	15.4%	24	0	0.0%	37	2	5.4%
Total	47	5	10.6%	70	1	1.4%	117	6	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 North Carolina, 2010-2012
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%

Primary defeats

There were 170 seats up for election in North Carolina. Overall, 127 incumbents filed for re-election, including 50 Democrats and 77 Republicans. Of that total, seven incumbents lost in primaries—two Democrats and five Republicans—representing 5.5% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in North Carolina, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	36	12	1	2.8%	52	15	5	9.6%	88	27	6	6.8%
Senate	14	3	1	7.1%	25	7	0	0.0%	39	10	1	2.6%
Total	50	15	2	4.0%	77	22	5	6.5%	127	37	7	5.5%

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

Incumbents defeated in primaries in North Carolina, 2010-2012
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%

North Dakota

General election defeats

There were 75 seats up for election in North Dakota. Overall, 57 incumbents advanced to the general election, including 18 Democrats and 39 Republicans. Of that total, six incumbents lost—four Democrats and two Republicans—representing 10.5% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in North Dakota, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	11	4	36.4%	27	1	3.7%	38	5	13.2%
Senate	7	0	0.0%	12	1	8.3%	19	1	5.3%
Total	18	4	22.2%	39	2	5.1%	57	6	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 North Dakota, 2010-2012
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%

Primary defeats

There were 75 seats up for election in North Dakota. Overall, 61 incumbents filed for re-election, including 18 Democrats and 43 Republicans. Of that total, four Republican incumbents lost in primaries, representing 6.6% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in North Dakota, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	11	0	0	0.0%	29	7	2	6.9%	40	7	2	5.0%
Senate	7	0	0	0.0%	14	3	2	14.3%	21	3	2	9.5%
Total	18	0	0	0.0%	43	10	4	9.3%	61	10	4	6.6%

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

Incumbents defeated in primaries in North Dakota, 2010-2012
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%

Ohio

General election defeats

There were 117 seats up for election in Ohio. Overall, 100 incumbents advanced to the general election, including 35 Democrats and 65 Republicans. Of that total, two Republican incumbents lost, representing 2.0% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Ohio, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	32	0	0.0%	52	2	3.8%	84	2	2.4%
Senate	3	0	0.0%	13	0	0.0%	16	0	0.0%
Total	35	0	0.0%	65	2	3.1%	100	2	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 Ohio, 2010-2012
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%

Primary defeats

There were 117 seats up for election in Ohio. Overall, 98 incumbents filed for re-election, including 36 Democrats and 62 Republicans. Of that total, one Republican incumbent lost in a primary, representing 1.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Ohio, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	33	6	0	0.0%	50	7	1	2.0%	83	13	1	1.2%
Senate	3	0	0	0.0%	12	1	0	0.0%	15	1	0	0.0%
Total	36	6	0	0.0%	62	8	1	1.6%	98	14	1	1.0%

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

Incumbents defeated in primaries in Ohio, 2010-2012
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%

Oklahoma

General election defeats

There were 125 seats up for election in Oklahoma. Overall, 101 incumbents advanced to the general election, including 30 Democrats and 71 Republicans. No incumbents who advanced to the general election lost.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Oklahoma, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	26	0	0.0%	59	0	0.0%	85	0	0.0%
Senate	4	0	0.0%	12	0	0.0%	16	0	0.0%
Total	30	0	0.0%	71	0	0.0%	101	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 Oklahoma, 2010-2012
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%

Primary defeats

There were 125 seats up for election in Oklahoma. Overall, 102 incumbents filed for re-election, including 30 Democrats and 72 Republicans. Of that total, one Republican incumbent lost in primaries, representing 1.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Oklahoma, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	26	2	0	0.0%	60	13	1	1.7%	86	15	1	1.2%
Senate	4	0	0	0.0%	12	4	0	0.0%	16	4	0	0.0%
Total	30	2	0	0.0%	72	17	1	1.4%	102	19	1	1.0%

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

Incumbents defeated in primaries in Oklahoma, 2010-2012
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%

Oregon

General election defeats

There were 76 seats up for election in Oregon. Overall, 64 incumbents advanced to the general election, including 30 Democrats and 34 Republicans. Of that total, four Republican incumbents lost, representing 6.3% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Oregon, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	23	0	0.0%	29	4	13.8%	52	4	7.7%
Senate	7	0	0.0%	5	0	0.0%	12	0	0.0%
Total	30	0	0.0%	34	4	11.8%	64	4	6.3%

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

Incumbents defeated in general elections in Oregon, 2010-2012
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%

Primary defeats

There were 76 seats up for election in Oregon. Overall, 66 incumbents filed for re-election, including 31 Democrats and 35 Republicans. Of that total, two incumbents lost in primaries—one Democrat and one Republican—representing 3.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Oregon, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	24	1	1	4.2%	29	1	0	0.0%	53	2	1	1.9%
Senate	7	0	0	0.0%	6	2	1	16.7%	13	2	1	7.7%
Total	31	1	1	3.2%	35	3	1	2.9%	66	4	2	3.0%

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

Incumbents defeated in primaries in Oregon, 2010-2012
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%

Pennsylvania

General election defeats

There were 228 seats up for election in Pennsylvania. Overall, 196 incumbents advanced to the general election, including 83 Democrats and 113 Republicans. Of that total, one Republican incumbent lost, representing 0.5% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Pennsylvania, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	73	0	0.0%	102	1	1.0%	175	1	0.6%
Senate	10	0	0.0%	11	0	0.0%	21	0	0.0%
Total	83	0	0.0%	113	1	0.9%	196	1	0.5%

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, 2010-2012
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%

Primary defeats

There were 228 seats up for election in Pennsylvania. Overall, 203 incumbents filed for re-election, including 88 Democrats and 115 Republicans. Of that total, five incumbents lost in primaries—four Democrats and one Republican—representing 2.5% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Pennsylvania, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	78	17	4	5.1%	104	11	1	1.0%	182	28	5	2.7%
Senate	10	0	0	0.0%	11	4	0	0.0%	21	4	0	0.0%
Total	88	17	4	4.5%	115	15	1	0.9%	203	32	5	2.5%

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

Incumbents defeated in primaries in Pennsylvania, 2010-2012
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%

Rhode Island

General election defeats

There were 113 seats up for election in Rhode Island. Overall, 94 incumbents advanced to the general election, including 78 Democrats, 15 Republicans, and one minor party or independent incumbent. Of that total, four Republican incumbents lost, representing 4.3% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Rhode Island, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	54	0	0.0%	7	2	28.6%	61	2	3.3%
Senate	24	0	0.0%	8	2	25.0%	33	2	6.1%
Total	78	0	0.0%	15	4	26.7%	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 Rhode Island, 2010-2012
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%

Primary defeats

There were 113 seats up for election in Rhode Island. Overall, 100 incumbents filed for re-election, including 84 Democrats and 15 Republicans. Of that total, six Democratic incumbents lost in primaries, representing 6.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Rhode Island, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	59	17	5	8.5%	7	1	0	0.0%	66	18	5	7.6%
Senate	25	7	1	4.0%	8	1	0	0.0%	34	8	1	2.9%
Total	84	24	6	7.1%	15	2	0	0.0%	100	26	6	6.0%

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

Incumbents defeated in primaries in Rhode Island, 2010-2012
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%

South Carolina

General election defeats

There were 170 seats up for election in South Carolina. Overall, 144 incumbents advanced to the general election, including 55 Democrats and 89 Republicans. Of that total, two Republican incumbents lost, representing 1.4% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in South Carolina, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	40	0	0.0%	67	1	1.5%	107	1	0.9%
Senate	15	0	0.0%	22	1	4.5%	37	1	2.7%
Total	55	0	0.0%	89	2	2.2%	144	2	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 South Carolina, 2010-2012
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%

Primary defeats

There were 170 seats up for election in South Carolina. Overall, 148 incumbents filed for re-election, including 57 Democrats and 91 Republicans. Of that total, five incumbents lost in primaries—two Democrats and three Republicans—representing 3.4% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in South Carolina, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	42	5	2	4.8%	67	9	1	1.5%	109	14	3	2.8%
Senate	15	2	0	0.0%	24	7	2	8.3%	39	9	2	5.1%
Total	57	7	2	3.5%	91	16	3	3.3%	148	23	5	3.4%

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

Incumbents defeated in primaries in South Carolina, 2010-2012
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%

South Dakota

General election defeats

There were 105 seats up for election in South Dakota. Overall, 66 incumbents advanced to the general election, including 13 Democrats and 53 Republicans. Of that total, four Republican incumbents lost, representing 6.1% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in South Dakota, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	9	0	0.0%	32	2	6.3%	41	2	4.9%
Senate	4	0	0.0%	21	2	9.5%	25	2	8.0%
Total	13	0	0.0%	53	4	7.5%	66	4	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 South Dakota, 2010-2012
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%

Primary defeats

There were 105 seats up for election in South Dakota. Overall, 74 incumbents filed for re-election, including 15 Democrats and 59 Republicans. Of that total, five incumbents lost in primaries—one Democrat and four Republicans—representing 6.8% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in South Dakota, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	11	3	1	9.1%	36	14	3	8.3%	47	17	4	8.5%
Senate	4	0	0	0.0%	23	8	1	4.3%	27	8	1	3.7%
Total	15	3	1	6.7%	59	22	4	6.8%	74	25	5	6.8%

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

Incumbents defeated in primaries in South Dakota, 2010-2012
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%

Tennessee

General election defeats

There were 115 seats up for election in Tennessee. Overall, 86 incumbents advanced to the general election, including 25 Democrats, 60 Republicans. and one minor party or independent incumbent. Of that total, two incumbents lost—one Democrat and one Republican—representing 2.3% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Tennessee, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	23	0	0.0%	53	1	1.9%	77	1	1.3%
Senate	2	1	50.0%	7	0	0.0%	9	1	11.1%
Total	25	1	4.0%	60	1	1.7%	86	2	2.3%

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

Incumbents defeated in general elections in Tennessee, 2010-2012
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%

Primary defeats

There were 115 seats up for election in Tennessee. Overall, 98 incumbents filed for re-election, including 30 Democrats and 67 Republicans. Of that total, 12 incumbents lost in primaries—five Democrats and seven Republicans—representing 12.2% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Tennessee, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	27	9	4	14.8%	60	21	7	11.7%	88	30	11	12.5%
Senate	3	2	1	33.3%	7	3	0	0.0%	10	5	1	10.0%
Total	30	11	5	16.7%	67	24	7	10.4%	98	35	12	12.2%

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

Incumbents defeated in primaries in Tennessee, 2010-2012
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%

Texas

General election defeats

There were 181 seats up for election in Texas. Overall, 135 incumbents advanced to the general election, including 52 Democrats and 83 Republicans. Of that total, three Republican incumbents lost, representing 2.2% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Texas, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	41	0	0.0%	69	3	4.3%	110	3	2.7%
Senate	11	0	0.0%	14	0	0.0%	25	0	0.0%
Total	52	0	0.0%	83	3	3.6%	135	3	2.2%

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

Incumbents defeated in general elections in Texas, 2010-2012
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%

Primary defeats

There were 181 seats up for election in Texas. Overall, 147 incumbents filed for re-election, including 53 Democrats and 94 Republicans. Of that total, 11 Republican incumbents lost in primaries, representing 7.5% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Texas, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	41	8	0	0.0%	79	37	10	12.7%	120	45	10	8.3%
Senate	12	0	0	0.0%	15	6	1	6.7%	27	6	1	3.7%
Total	53	8	0	0.0%	94	43	11	11.7%	147	51	11	7.5%

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

Incumbents defeated in primaries in Texas, 2010-2012
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%

Utah

General election defeats

There were 91 seats up for election in Utah. Overall, 70 incumbents advanced to the general election, including 15 Democrats and 55 Republicans. Of that total, two incumbents lost—one Democrat and one Republican—representing 2.9% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Utah, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	14	1	7.1%	44	1	2.3%	58	2	3.4%
Senate	1	0	0.0%	11	0	0.0%	12	0	0.0%
Total	15	1	6.7%	55	1	1.8%	70	2	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 Utah, 2010-2012
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%

Primary defeats

There were 91 seats up for election in Utah. Overall, 78 incumbents filed for re-election, including 17 Democrats and 61 Republicans. Of that total, eight incumbents lost in primaries—two Democrats and six Republicans—representing 10.3% of incumbents who filed for re-election.^[6]

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Utah, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	16	2	2	12.5%	49	10	5	10.2%	65	12	7	10.8%
Senate	1	0	0	0.0%	12	2	1	8.3%	13	2	1	7.7%
Total	17	2	2	11.8%	61	12	6	9.8%	78	14	8	10.3%

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

Incumbents defeated in primaries in Utah, 2010-2012
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%

Vermont

General election defeats

There were 180 seats up for election in Vermont. Overall, 155 incumbents advanced to the general election, including 106 Democrats, 45 Republicans, and four minor party or independent incumbents. Of that total, six incumbents lost—three Democrats and three Republicans—representing 3.9% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Vermont, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	87	3	3.4%	40	3	7.5%	131	6	4.6%
Senate	19	0	0.0%	5	0	0.0%	24	0	0.0%
Total	106	3	2.8%	45	3	6.7%	155	6	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 Vermont, 2010-2012
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%

Primary defeats

There were 180 seats up for election in Vermont. Overall, 155 incumbents filed for re-election, including 105 Democrats and 45 Republicans. No incumbents who filed for re-election lost in primaries.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Vermont, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	86	3	0	0.0%	40	1	0	0.0%	131	4	0	0.0%
Senate	19	8	0	0.0%	5	0	0	0.0%	24	8	0	0.0%
Total	105	11	0	0.0%	45	1	0	0.0%	155	12	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 Vermont, 2010-2012
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%

Washington

General election defeats

There were 124 seats up for election in Washington. Overall, 97 incumbents advanced to the general election, including 53 Democrats and 44 Republicans. Of that total, three incumbents lost—one Democrat and two Republicans—representing 3.1% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Washington, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	45	0	0.0%	33	1	3.0%	78	1	1.3%
Senate	8	1	12.5%	11	1	9.1%	19	2	10.5%
Total	53	1	1.9%	44	2	4.5%	97	3	3.1%

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

Incumbents defeated in general elections in Washington, 2010-2012
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%

Primary defeats

There were 124 seats up for election in Washington. Overall, 98 incumbents filed for re-election, including 53 Democrats and 45 Republicans. Of that total, one Republican incumbent lost in a primary, representing 1.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Washington, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	45	8	0	0.0%	34	3	1	2.9%	79	11	1	1.3%
Senate	8	2	0	0.0%	11	2	0	0.0%	19	4	0	0.0%
Total	53	10	0	0.0%	45	5	1	2.2%	98	15	1	1.0%

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

Incumbents defeated in primaries in Washington, 2010-2012
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%

West Virginia

General election defeats

There were 117 seats up for election in West Virginia. Overall, 96 incumbents advanced to the general election, including 64 Democrats and 32 Republicans. Of that total, eight incumbents lost—seven Democrats and one Republican—representing 8.3% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in West Virginia, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	53	6	11.3%	30	1	3.3%	83	7	8.4%
Senate	11	1	9.1%	2	0	0.0%	13	1	7.7%
Total	64	7	10.9%	32	1	3.1%	96	8	8.3%

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

Incumbents defeated in general elections in West Virginia, 2010-2012
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%

Primary defeats

There were 117 seats up for election in West Virginia. Overall, 98 incumbents filed for re-election, including 66 Democrats and 32 Republicans. Of that total, two Democratic incumbents lost in primaries, representing 2.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in West Virginia, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	54	34	1	1.9%	30	8	0	0.0%	84	42	1	1.2%
Senate	12	3	1	8.3%	2	0	0	0.0%	14	3	1	7.1%
Total	66	37	2	3.0%	32	8	0	0.0%	98	45	2	2.0%

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

Incumbents defeated in primaries in West Virginia, 2010-2012
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%

Wisconsin

General election defeats

There were 115 seats up for election in Wisconsin. Overall, 92 incumbents advanced to the general election, including 34 Democrats and 58 Republicans. Of that total, five incumbents lost—two Democrats and three Republicans—representing 5.4% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Wisconsin, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	26	1	3.8%	52	3	5.8%	78	4	5.1%
Senate	8	1	12.5%	6	0	0.0%	14	1	7.1%
Total	34	2	5.9%	58	3	5.2%	92	5	5.4%

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

Incumbents defeated in general elections in Wisconsin, 2010-2012
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%

Primary defeats

There were 115 seats up for election in Wisconsin. Overall, 94 incumbents filed for re-election, including 36 Democrats and 58 Republicans. Of that total, two Democratic incumbents lost in primaries, representing 2.1% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Wisconsin, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	28	9	2	7.1%	52	5	0	0.0%	80	14	2	2.5%
Senate	8	0	0	0.0%	6	1	0	0.0%	14	1	0	0.0%
Total	36	9	2	5.6%	58	6	0	0.0%	94	15	2	2.1%

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

Incumbents defeated in primaries in Wisconsin, 2010-2012
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%

Wyoming

General election defeats

There were 75 seats up for election in Wyoming. Overall, 57 incumbents advanced to the general election, including nine Democrats and 48 Republicans. Of that total, one Democratic incumbent lost, representing 1.8% of incumbents who advanced to the general election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in general elections in Wyoming, 2012
Chamber
	Democratic incumbents			Republican incumbents			Total incumbents
	Running	Def.	%	Running	Def.	%	Running	Def.	%
House	8	1	12.5%	36	0	0.0%	44	1	2.3%
Senate	1	0	0.0%	12	0	0.0%	13	0	0.0%
Total	9	1	11.1%	48	0	0.0%	57	1	1.8%

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

Incumbents defeated in general elections in Wyoming, 2010-2012
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%

Primary defeats

There were 75 seats up for election in Wyoming. Overall, 60 incumbents filed for re-election, including nine Democrats and 51 Republicans. Of that total, three Republican incumbents lost in primaries, representing 5.0% of incumbents who filed for re-election.

Statistics from 2012 are shown below. Hover over column headings to learn more about their contents.

Incumbents defeated in primaries in Wyoming, 2012
Chamber
	Democratic incumbents				Republican incumbents				Total incumbents
	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%	Filed	Cont.	Def.	%
House	8	0	0	0.0%	38	14	2	5.3%	46	14	2	4.3%
Senate	1	0	0	0.0%	13	7	1	7.7%	14	7	1	7.1%
Total	9	0	0	0.0%	51	21	3	5.9%	60	21	3	5.0%

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

Incumbents defeated in primaries in Wyoming, 2010-2012
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%

Footnotes

↑ Incumbents may also be defeated in other nominating contests such as conventions. Ballotpedia counts an incumbent defeat in a convention as a defeat in a primary.
↑ The general election figure does not include one incumbent defeated in a primary who ran in the general election and lost again. This incumbent is recorded as a primary defeat only.
↑ ^3.0 ^3.1 ^3.2 ^3.3 ^3.4 ^3.5 ^3.6 ^3.7 Includes one minor party or independent incumbent.
↑ ^4.0 ^4.1 Does not include one Democratic incumbent who lost in a primary, ran in the general election, and lost again.
↑ Does not include three Democratic incumbents who lost in a primary, ran in the general election, and lost again.
↑ This includes one Democratic and one Republican incumbent defeated in conventions.

[1] Incumbents may also be defeated in other nominating contests such as conventions. Ballotpedia counts an incumbent defeat in a convention as a defeat in a primary.

[2] The general election figure does not include one incumbent defeated in a primary who ran in the general election and lost again. This incumbent is recorded as a primary defeat only.

[includes1-3] 3.0 ^3.1 ^3.2 ^3.3 ^3.4 ^3.5 ^3.6 ^3.7 Includes one minor party or independent incumbent.

[1dprimgen-4] 4.0 ^4.1 Does not include one Democratic incumbent who lost in a primary, ran in the general election, and lost again.

[5] Does not include three Democratic incumbents who lost in a primary, ran in the general election, and lost again.

[6] This includes one Democratic and one Republican incumbent defeated in conventions.

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Incumbents defeated in state legislative elections, 2012

Incumbents defeated in general elections

In 2012

Historical comparison

Incumbents defeated in primaries

In 2012

Historical comparison

By state

Overview

General elections

Primaries

Alaska

General election defeats

Primary defeats

Arizona

General election defeats

Primary defeats

Arkansas

General election defeats

Primary defeats

California

General election defeats

Primary defeats

Colorado

General election defeats

Primary defeats

Connecticut

General election defeats

Primary defeats

Delaware

General election defeats

Primary defeats

Florida

General election defeats

Primary defeats

Georgia

General election defeats

Primary defeats

Hawaii

General election defeats

Primary defeats

Idaho

General election defeats

Primary defeats

Illinois

General election defeats

Primary defeats

Indiana

General election defeats

Primary defeats

Iowa

General election defeats

Primary defeats

Kansas

General election defeats

Primary defeats

Kentucky

General election defeats

Primary defeats

Maine

General election defeats

Primary defeats

Massachusetts

General election defeats

Primary defeats

Michigan

General election defeats

Primary defeats

Minnesota

General election defeats

Primary defeats

Missouri

General election defeats

Primary defeats

Montana

General election defeats

Primary defeats

Nebraska

General election defeats

Primary defeats