State legislative incumbents without general election challengers, 2018

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Last updated on July 8, 2025

There were 6,073 state legislative seats up for election on November 6, 2018, in 45 states. Overall, 4,703 incumbents ran in the general election. Of that total, 1,420 incumbents were uncontested, representing 30.2% of all incumbents who ran in the general election. That was the fewest uncontested incumbents since 2010.

A general election is uncontested when there are no candidates other than the incumbent running. Learn more about the terms and methodologies used in this analysis.

Ballotpedia uses the number and percentage of incumbents in uncontested general elections to help determine the overall competitiveness of an election cycle. A larger number of uncontested general elections indicates less competitiveness because there are fewer opportunities for voters to elect a non-incumbent to office. A smaller number indicates more of those opportunities.

In 2018:

There were 888 Democratic incumbents in uncontested general elections, representing 42.3% of all Democratic incumbents who ran in the general election, a 3% decrease from 2016.

There were 529 Republican incumbents in uncontested general elections, representing 20.5% of all Republican incumbents who ran in the general election, a 41% decrease from 2016.

There were three minor party or independent incumbents in uncontested general elections, representing 12.5% of all minor party or independent incumbents who ran in the general election.

The total number of incumbents in uncontested general elections—1,420—the lowest since 2010 and a 21% decrease from 2016.

State legislative incumbents without general election challengers, 2018
Chamber	Seats
		Democratic			Republican			Total
		Filed	Cont.	%	Filed	Cont.	%	Filed	Cont.	%
House	4,958	1,742	758	43.5%	2,120	438	20.7%	3,885	1,199	30.9%
Senate	1,109	355	130	36.6%	462	91	19.7%	818	221	27.0%
Total	6,067	2,097	888	42.3%	2,582	529	20.5%	4,703	1,420	30.2%

Click [show] on the table below to view incumbents without general election challengers statistics by state in 2018. Hover over column headings to learn more about their contents.

State legislative incumbents without general election challengers, 2018
State	Seats
		Democratic			Republican			Total
		Filed	Cont.	%	Filed	Cont.	%	Filed	Cont.	%
Nationwide	6,067	2,097	888	42.3%	2,582	529	20.5%	4,703	1,420	30.2%
Alabama	140	31	26	83.9%	70	32	45.7%	101	58	57.4%
Alaska	50	14	2	14.3%	20	5	25.0%	36	7	19.4%
Arizona	90	23	7	30.4%	31	0	0.0%	54	7	13.0%
Arkansas	118	20	13	65.0%	70	36	51.4%	91	49	53.8%
California	100	61	5	8.2%	27	0	0.0%	88	5	5.7%
Colorado	82	27	8	29.6%	26	0	0.0%	53	8	15.1%
Connecticut	187	82	14	17.1%	79	5	6.3%	161	19	11.8%
Delaware	51	20	5	25.0%	16	3	18.8%	36	8	22.2%
Florida	140	37	27	73.0%	62	7	11.3%	99	34	34.3%
Georgia	236	78	66	84.6%	129	73	56.6%	207	139	67.1%
Hawaii	63	47	29	61.7%	4	1	25.0%	51	30	58.8%
Idaho	105	14	3	21.4%	69	34	49.3%	83	37	44.6%
Illinois	157	75	49	65.3%	55	20	36.4%	130	69	53.1%
Indiana	125	28	20	71.4%	81	14	17.3%	109	34	31.2%
Iowa	125	46	21	45.7%	55	6	10.9%	101	27	26.7%
Kansas	125	40	23	57.5%	65	29	44.6%	105	52	49.5%
Kentucky	119	28	8	28.6%	66	8	12.1%	94	16	17.0%
Maine	186	73	8	11.0%	50	4	8.0%	126	12	9.5%
Maryland	188	83	19	22.9%	53	2	3.8%	136	21	15.4%
Massachusetts	200	134	103	76.9%	37	13	35.1%	173	116	67.1%
Michigan	148	30	0	0.0%	45	0	0.0%	75	0	0.0%
Minnesota	134	41	2	4.9%	69	0	0.0%	110	2	1.8%
Missouri	180	33	15	45.5%	82	13	15.9%	115	28	24.3%
Montana	125	34	13	38.2%	53	7	13.2%	87	20	23.0%
Nevada	53	24	9	37.5%	13	3	23.1%	37	12	32.4%
New Hampshire	424	141	17	12.1%	159	6	3.8%	303	23	7.6%
New Mexico	70	32	21	65.6%	26	12	46.2%	58	33	56.9%
New York	213	121	48	39.7%	63	13	20.6%	185	61	33.0%
North Carolina	170	54	1	1.9%	92	0	0.0%	146	1	0.7%
North Dakota	72	11	3	27.3%	48	7	14.6%	59	10	16.9%
Ohio	116	24	6	25.0%	50	0	0.0%	74	6	8.1%
Oklahoma	125	22	14	63.6%	48	12	25.0%	70	26	37.1%
Oregon	75	42	13	31.0%	24	3	12.5%	66	16	24.2%
Pennsylvania	228	78	53	67.9%	111	21	18.9%	189	74	39.2%
Rhode Island	113	83	48	57.8%	12	3	25.0%	95	51	53.7%
South Carolina	124	39	24	61.5%	72	37	51.4%	111	61	55.0%
South Dakota	105	9	4	44.4%	67	0	0.0%	76	4	5.3%
Tennessee	116	19	15	78.9%	66	11	16.7%	85	26	30.6%
Texas	165	52	37	71.2%	90	20	22.2%	142	57	40.1%
Utah	89	14	1	7.1%	53	7	13.2%	67	8	11.9%
Vermont	180	91	41	45.1%	44	11	25.0%	145	55	37.9%
Washington	123	58	13	22.4%	46	2	4.3%	104	15	14.4%
West Virginia	117	37	3	8.1%	56	3	5.4%	94	6	6.4%
Wisconsin	116	35	24	68.6%	63	7	11.1%	98	31	31.6%
Wyoming	75	9	5	55.6%	53	35	66.0%	62	40	64.5%

Historical comparison

The chart below shows a breakdown of incumbents in contested primaries from 2010 to 2018.

Click [show] on the table below to view overall incumbents in contested primaries statistics by state from 2010 to 2018. Hover over column headings to learn more about their contents.

State legislative incumbents without general election challengers, 2010-2018
State
	2010			2012			2014			2016			2018
	Dem.	Rep.	Total	Dem.	Rep.	Total	Dem.	Rep.	Total	Dem.	Rep.	Total	Dem.	Rep.	Total
Nationwide	25%	39%	31%	39%	35%	37%	38%	40%	39%	43%	34%	38%	42%	20%	30%
Alabama	48%	64%	54%	-	-	-	56%	61%	59%	-	-	-	84%	46%	57%
Alaska	45%	39%	42%	19%	33%	27%	56%	7%	27%	50%	26%	36%	14%	25%	19%
Arizona	21%	7%	13%	59%	28%	37%	19%	18%	19%	48%	11%	25%	30%	0%	13%
Arkansas	73%	91%	79%	47%	55%	52%	60%	70%	65%	62%	80%	73%	65%	51%	54%
California	5%	6%	5%	6%	0%	4%	7%	5%	6%	6%	0%	4%	8%	0%	6%
Colorado	3%	27%	13%	0%	5%	2%	8%	43%	22%	15%	10%	12%	30%	0%	15%
Connecticut	18%	27%	20%	22%	22%	22%	21%	24%	22%	18%	29%	23%	17%	6%	12%
Delaware	23%	44%	30%	50%	31%	44%	47%	24%	38%	58%	32%	48%	25%	19%	22%
Florida	45%	42%	43%	48%	40%	42%	52%	52%	52%	76%	38%	47%	73%	11%	34%
Georgia	80%	66%	72%	79%	79%	79%	88%	78%	82%	82%	80%	81%	85%	57%	67%
Hawaii	4%	50%	9%	37%	33%	36%	24%	0%	22%	44%	25%	42%	62%	25%	59%
Idaho	16%	58%	49%	9%	33%	29%	13%	45%	40%	35%	44%	43%	21%	49%	45%
Illinois	53%	24%	42%	63%	59%	61%	60%	70%	63%	68%	58%	64%	65%	36%	53%
Indiana	4%	33%	18%	38%	26%	30%	44%	46%	45%	48%	24%	30%	71%	17%	31%
Iowa	16%	62%	34%	18%	37%	28%	55%	37%	46%	39%	21%	29%	46%	11%	27%
Kansas	30%	50%	42%	17%	34%	28%	38%	41%	40%	61%	25%	35%	58%	45%	50%
Kentucky	30%	60%	41%	46%	68%	55%	46%	58%	52%	29%	61%	44%	29%	12%	17%
Maine	4%	6%	5%	6%	6%	6%	9%	12%	9%	19%	8%	13%	11%	8%	10%
Maryland	25%	11%	22%	-	-	-	29%	13%	25%	-	-	-	23%	4%	15%
Massachusetts	49%	73%	52%	69%	54%	66%	59%	60%	59%	79%	48%	72%	77%	35%	67%
Michigan	0%	7%	3%	0%	2%	1%	0%	0%	0%	0%	0%	0%	0%	0%	0%
Minnesota	0%	11%	3%	7%	2%	5%	1%	16%	8%	4%	2%	3%	5%	0%	2%
Missouri	34%	53%	43%	61%	44%	49%	48%	54%	52%	56%	49%	50%	45%	16%	24%
Montana	24%	33%	29%	19%	21%	20%	43%	2%	18%	40%	14%	26%	38%	13%	23%
Nevada	0%	0%	0%	22%	45%	29%	15%	29%	21%	14%	29%	21%	38%	23%	32%
New Hampshire	1%	4%	2%	21%	7%	11%	10%	13%	11%	19%	2%	9%	12%	4%	8%
New Mexico	47%	68%	54%	56%	62%	58%	55%	41%	48%	79%	47%	63%	66%	46%	57%
New York	16%	24%	19%	33%	28%	31%	35%	45%	38%	35%	34%	35%	40%	21%	33%
North Carolina	14%	57%	33%	60%	39%	47%	60%	38%	45%	54%	39%	45%	2%	0%	1%
North Dakota	8%	30%	21%	11%	15%	14%	50%	24%	29%	0%	13%	8%	27%	15%	17%
Ohio	4%	18%	10%	26%	8%	14%	13%	21%	19%	29%	27%	28%	25%	0%	8%
Oklahoma	50%	66%	60%	67%	72%	70%	68%	70%	69%	45%	33%	36%	64%	25%	37%
Oregon	5%	8%	6%	10%	21%	16%	26%	33%	29%	20%	25%	22%	31%	13%	24%
Pennsylvania	41%	41%	41%	52%	45%	48%	62%	53%	57%	55%	41%	47%	68%	19%	39%
Rhode Island	19%	38%	20%	46%	27%	43%	63%	33%	60%	52%	31%	49%	58%	25%	54%
South Carolina	69%	64%	66%	75%	76%	76%	68%	77%	74%	77%	78%	78%	62%	51%	55%
South Dakota	24%	25%	25%	46%	26%	30%	44%	40%	41%	50%	22%	27%	44%	0%	5%
Tennessee	31%	55%	42%	48%	47%	47%	48%	64%	59%	52%	38%	42%	79%	17%	31%
Texas	37%	39%	38%	40%	45%	43%	55%	0%	22%	64%	49%	54%	71%	22%	40%
Utah	4%	23%	16%	0%	20%	16%	31%	21%	23%	38%	33%	34%	7%	13%	12%
Vermont	25%	43%	30%	48%	38%	45%	39%	43%	40%	35%	33%	34%	45%	25%	38%
Washington	11%	42%	23%	21%	39%	29%	16%	21%	18%	27%	22%	25%	22%	4%	14%
West Virginia	26%	20%	24%	20%	31%	24%	2%	23%	11%	3%	7%	6%	8%	5%	6%
Wisconsin	16%	33%	23%	47%	10%	24%	53%	45%	48%	67%	30%	44%	69%	11%	32%
Wyoming	33%	83%	68%	33%	77%	70%	56%	71%	68%	44%	20%	25%	56%	66%	65%

Alabama

There were 140 seats up for election in Alabama. A total of 101 incumbents advanced to the general election: 31 Democrats and 70 Republicans. Of that total, 58 incumbents—26 Democrats and 32 Republicans—had no general election challengers, representing 57.4% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Alabama, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	105	24	20	83.3%	54	24	44.4%	78	44	56.4%
Senate	35	7	6	85.7%	16	8	50.0%	23	14	60.9%
Total	140	31	26	83.9%	70	32	45.7%	101	58	57.4%

2010-2018

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

State legislative incumbents in contested primaries in Alabama, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	140	65	31	47.7%	47	30	63.8%	113	61	54.0%
2012	Did not hold elections.
2014	140	41	23	56.1%	69	42	60.9%	111	65	58.6%
2016	Did not hold elections.
2018	140	31	26	83.9%	70	32	45.7%	101	58	57.4%

See also:

• Alabama House of Representatives elections, 2018
• Alabama State Senate elections, 2018

Alaska

There were 50 seats up for election in Alaska. A total of 36 incumbents advanced to the general election: 14 Democrats, 20 Republicans, and two independent or minor party incumbents. Of that total, seven incumbents—two Democrats and five Republicans—had no general election challengers, representing 19.4% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Alaska, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	40	13	1	7.7%	15	3	20.0%	30	4	13.3%
Senate	10	1	1	100.0%	5	2	40.0%	6	3	50.0%
Total	50	14	2	14.3%	20	5	25.0%	36	7	19.4%

2010-2018

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

State legislative incumbents in contested primaries in Alaska, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	50	22	10	45.5%	23	9	39.1%	45	19	42.2%
2012	59	21	4	19.0%	30	10	33.3%	52	14	26.9%
2014	54	18	10	55.6%	27	2	7.4%	45	12	26.7%
2016	50	16	8	50.0%	19	5	26.3%	36	13	36.1%
2018	50	14	2	14.3%	20	5	25.0%	36	7	19.4%

See also:

• Alaska House of Representatives elections, 2018
• Alaska State Senate elections, 2018

Arizona

There were 90 seats up for election in Arizona. A total of 54 incumbents advanced to the general election: 23 Democrats and 31 Republicans. Of that total, seven incumbents—seven Democrats and no Republicans—had no general election challengers, representing 13.0% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Arizona, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	60	15	4	26.7%	23	0	0.0%	38	4	10.5%
Senate	30	8	3	37.5%	8	0	0.0%	16	3	18.8%
Total	90	23	7	30.4%	31	0	0.0%	54	7	13.0%

2010-2018

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

State legislative incumbents in contested primaries in Arizona, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	90	19	4	21.1%	28	2	7.1%	47	6	12.8%
2012	90	17	10	58.8%	40	11	27.5%	57	21	36.8%
2014	90	26	5	19.2%	38	7	18.4%	64	12	18.8%
2016	90	23	11	47.8%	37	4	10.8%	60	15	25.0%
2018	90	23	7	30.4%	31	0	0.0%	54	7	13.0%

See also:

• Arizona House of Representatives elections, 2018
• Arizona State Senate elections, 2018

Arkansas

There were 118 seats up for election in Arkansas. A total of 91 incumbents advanced to the general election: 20 Democrats, 70 Republicans, and one independent or minor party incumbent. Of that total, 49 incumbents—13 Democrats and 36 Republicans—had no general election challengers, representing 53.8% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Arkansas, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	100	16	10	62.5%	62	32	51.6%	79	42	53.2%
Senate	18	4	3	75.0%	8	4	50.0%	12	7	58.3%
Total	118	20	13	65.0%	70	36	51.4%	91	49	53.8%

2010-2018

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

State legislative incumbents in contested primaries in Arkansas, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	117	41	30	73.2%	22	20	90.9%	63	50	79.4%
2012	135	38	18	47.4%	47	26	55.3%	85	44	51.8%
2014	118	43	26	60.5%	40	28	70.0%	83	54	65.1%
2016	117	34	21	61.8%	64	51	79.7%	98	72	73.5%
2018	118	20	13	65.0%	70	36	51.4%	91	49	53.8%

See also:

• Arkansas House of Representatives elections, 2018
• Arkansas State Senate elections, 2018

California

There were 100 seats up for election in California. A total of 88 incumbents advanced to the general election: 61 Democrats and 27 Republicans. Of that total, five incumbents—five Democrats and no Republicans—had no general election challengers, representing 5.7% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in California, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	80	53	4	7.5%	22	0	0.0%	75	4	5.3%
Senate	20	8	1	12.5%	5	0	0.0%	13	1	7.7%
Total	100	61	5	8.2%	27	0	0.0%	88	5	5.7%

2010-2018

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

State legislative incumbents in contested primaries in California, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	100	44	2	4.5%	18	1	5.6%	62	3	4.8%
2012	100	36	2	5.6%	20	0	0.0%	56	2	3.6%
2014	100	45	3	6.7%	22	1	4.5%	67	4	6.0%
2016	100	51	3	5.9%	23	0	0.0%	74	3	4.1%
2018	100	61	5	8.2%	27	0	0.0%	88	5	5.7%

See also:

• California State Assembly elections, 2018
• California State Senate elections, 2018

Colorado

There were 82 seats up for election in Colorado. A total of 53 incumbents advanced to the general election: 27 Democrats and 26 Republicans. Of that total, eight incumbents—eight Democrats and no Republicans—had no general election challengers, representing 15.1% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Colorado, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	65	25	7	28.0%	19	0	0.0%	44	7	15.9%
Senate	17	2	1	50.0%	7	0	0.0%	9	1	11.1%
Total	82	27	8	29.6%	26	0	0.0%	53	8	15.1%

2010-2018

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

State legislative incumbents in contested primaries in Colorado, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	84	37	1	2.7%	26	7	26.9%	64	8	12.5%
2012	85	29	0	0.0%	22	1	4.5%	51	1	2.0%
2014	82	36	3	8.3%	23	10	43.5%	59	13	22.0%
2016	83	26	4	15.4%	31	3	9.7%	57	7	12.3%
2018	82	27	8	29.6%	26	0	0.0%	53	8	15.1%

See also:

• Colorado House of Representatives elections, 2018
• Colorado State Senate elections, 2018

Connecticut

There were 187 seats up for election in Connecticut. A total of 161 incumbents advanced to the general election: 82 Democrats and 79 Republicans. Of that total, 19 incumbents—14 Democrats and five Republicans—had no general election challengers, representing 11.8% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Connecticut, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	151	68	13	19.1%	64	5	7.8%	132	18	13.6%
Senate	36	14	1	7.1%	15	0	0.0%	29	1	3.4%
Total	187	82	14	17.1%	79	5	6.3%	161	19	11.8%

2010-2018

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

State legislative incumbents in contested primaries in Connecticut, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	187	123	22	17.9%	44	12	27.3%	167	34	20.4%
2012	187	100	22	22.0%	59	13	22.0%	159	35	22.0%
2014	187	103	22	21.4%	58	14	24.1%	161	36	22.4%
2016	187	94	17	18.1%	68	20	29.4%	162	37	22.8%
2018	187	82	14	17.1%	79	5	6.3%	161	19	11.8%

See also:

• Connecticut House of Representatives elections, 2018
• Connecticut State Senate elections, 2018

Delaware

There were 51 seats up for election in Delaware. A total of 36 incumbents advanced to the general election: 20 Democrats and 16 Republicans. Of that total, eight incumbents—five Democrats and three Republicans—had no general election challengers, representing 22.2% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Delaware, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	41	18	5	27.8%	12	3	25.0%	30	8	26.7%
Senate	10	2	0	0.0%	4	0	0.0%	6	0	0.0%
Total	51	20	5	25.0%	16	3	18.8%	36	8	22.2%

2010-2018

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

State legislative incumbents in contested primaries in Delaware, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	52	31	7	22.6%	16	7	43.8%	47	14	29.8%
2012	62	34	17	50.0%	16	5	31.3%	50	22	44.0%
2014	51	30	14	46.7%	17	4	23.5%	47	18	38.3%
2016	52	31	18	58.1%	19	6	31.6%	50	24	48.0%
2018	51	20	5	25.0%	16	3	18.8%	36	8	22.2%

See also:

• Delaware House of Representatives elections, 2018
• Delaware State Senate elections, 2018

Florida

There were 140 seats up for election in Florida. A total of 99 incumbents advanced to the general election: 37 Democrats and 62 Republicans. Of that total, 34 incumbents—27 Democrats and seven Republicans—had no general election challengers, representing 34.3% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Florida, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	120	32	23	71.9%	52	7	13.5%	84	30	35.7%
Senate	20	5	4	80.0%	10	0	0.0%	15	4	26.7%
Total	140	37	27	73.0%	62	7	11.3%	99	34	34.3%

2010-2018

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

State legislative incumbents in contested primaries in Florida, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	143	40	18	45.0%	55	23	41.8%	95	41	43.2%
2012	160	29	14	48.3%	77	31	40.3%	106	45	42.5%
2014	140	42	22	52.4%	79	41	51.9%	121	63	52.1%
2016	160	25	19	76.0%	72	27	37.5%	97	46	47.4%
2018	140	37	27	73.0%	62	7	11.3%	99	34	34.3%

See also:

• Florida House of Representatives elections, 2018
• Florida State Senate elections, 2018

Georgia

There were 236 seats up for election in Georgia. A total of 207 incumbents advanced to the general election: 78 Democrats and 129 Republicans. Of that total, 139 incumbents—66 Democrats and 73 Republicans—had no general election challengers, representing 67.1% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Georgia, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	180	60	52	86.7%	95	55	57.9%	155	107	69.0%
Senate	56	18	14	77.8%	34	18	52.9%	52	32	61.5%
Total	236	78	66	84.6%	129	73	56.6%	207	139	67.1%

2010-2018

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

State legislative incumbents in contested primaries in Georgia, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	236	84	67	79.8%	108	71	65.7%	193	138	71.5%
2012	236	67	53	79.1%	128	101	78.9%	196	154	78.6%
2014	236	72	63	87.5%	139	109	78.4%	212	173	81.6%
2016	236	68	56	82.4%	141	113	80.1%	209	169	80.9%
2018	236	78	66	84.6%	129	73	56.6%	207	139	67.1%

See also:

• Georgia House of Representatives elections, 2018
• Georgia State Senate elections, 2018

Hawaii

There were 63 seats up for election in Hawaii. A total of 51 incumbents advanced to the general election: 47 Democrats and four Republicans. Of that total, 30 incumbents—29 Democrats and one Republican—had no general election challengers, representing 58.8% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Hawaii, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	51	38	25	65.8%	4	1	25.0%	42	26	61.9%
Senate	12	9	4	44.4%	0	0	#DIV/0!	9	4	44.4%
Total	63	47	29	61.7%	4	1	25.0%	51	30	58.8%

2010-2018

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

State legislative incumbents in contested primaries in Hawaii, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	66	51	2	3.9%	6	3	50.0%	57	5	8.8%
2012	76	60	22	36.7%	6	2	33.3%	66	24	36.4%
2014	63	49	12	24.5%	6	0	0.0%	55	12	21.8%
2016	64	52	23	44.2%	8	2	25.0%	60	25	41.7%
2018	63	47	29	61.7%	4	1	25.0%	51	30	58.8%

See also:

• Hawaii House of Representatives elections, 2018
• Hawaii State Senate elections, 2018

Idaho

There were 105 seats up for election in Idaho. A total of 83 incumbents advanced to the general election: 14 Democrats and 69 Republicans. Of that total, 37 incumbents—three Democrats and 34 Republicans—had no general election challengers, representing 44.6% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Idaho, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	70	8	2	25.0%	45	22	48.9%	53	24	45.3%
Senate	35	6	1	16.7%	24	12	50.0%	30	13	43.3%
Total	105	14	3	21.4%	69	34	49.3%	83	37	44.6%

2010-2018

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

State legislative incumbents in contested primaries in Idaho, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	105	19	3	15.8%	71	41	57.7%	90	44	48.9%
2012	105	11	1	9.1%	55	18	32.7%	66	19	28.8%
2014	105	15	2	13.3%	73	33	45.2%	88	35	39.8%
2016	105	17	6	35.3%	72	32	44.4%	89	38	42.7%
2018	105	14	3	21.4%	69	34	49.3%	83	37	44.6%

See also:

• Idaho House of Representatives elections, 2018
• Idaho State Senate elections, 2018

Illinois

There were 157 seats up for election in Illinois. A total of 130 incumbents advanced to the general election: 75 Democrats and 55 Republicans. Of that total, 69 incumbents—49 Democrats and 20 Republicans—had no general election challengers, representing 53.1% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Illinois, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	118	58	36	62.1%	40	14	35.0%	98	50	51.0%
Senate	39	17	13	76.5%	15	6	40.0%	32	19	59.4%
Total	157	75	49	65.3%	55	20	36.4%	130	69	53.1%

2010-2018

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

State legislative incumbents in contested primaries in Illinois, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	139	75	40	53.3%	50	12	24.0%	125	52	41.6%
2012	177	81	51	63.0%	58	34	58.6%	139	85	61.2%
2014	137	80	48	60.0%	43	30	69.8%	123	78	63.4%
2016	158	90	61	67.8%	53	31	58.5%	143	92	64.3%
2018	157	75	49	65.3%	55	20	36.4%	130	69	53.1%

See also:

• Illinois House of Representatives elections, 2018
• Illinois State Senate elections, 2018

Indiana

There were 125 seats up for election in Indiana. A total of 109 incumbents advanced to the general election: 28 Democrats and 81 Republicans. Of that total, 34 incumbents—20 Democrats and 14 Republicans—had no general election challengers, representing 31.2% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Indiana, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	100	25	20	80.0%	62	8	12.9%	87	28	32.2%
Senate	25	3	0	0.0%	19	6	31.6%	22	6	27.3%
Total	125	28	20	71.4%	81	14	17.3%	109	34	31.2%

2010-2018

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

State legislative incumbents in contested primaries in Indiana, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	125	56	2	3.6%	55	18	32.7%	111	20	18.0%
2012	125	34	13	38.2%	68	18	26.5%	102	31	30.4%
2014	125	36	16	44.4%	79	36	45.6%	115	52	45.2%
2016	125	29	14	48.3%	76	18	23.7%	105	32	30.5%
2018	125	28	20	71.4%	81	14	17.3%	109	34	31.2%

See also:

• Indiana House of Representatives elections, 2018
• Indiana State Senate elections, 2018

Iowa

There were 125 seats up for election in Iowa. A total of 101 incumbents advanced to the general election: 46 Democrats and 55 Republicans. Of that total, 27 incumbents—21 Democrats and six Republicans—had no general election challengers, representing 26.7% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Iowa, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	100	37	18	48.6%	46	5	10.9%	83	23	27.7%
Senate	25	9	3	33.3%	9	1	11.1%	18	4	22.2%
Total	125	46	21	45.7%	55	6	10.9%	101	27	26.7%

2010-2018

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

State legislative incumbents in contested primaries in Iowa, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	125	63	10	15.9%	42	26	61.9%	105	36	34.3%
2012	126	45	8	17.8%	51	19	37.3%	96	27	28.1%
2014	125	55	30	54.5%	54	20	37.0%	109	50	45.9%
2016	125	49	19	38.8%	61	13	21.3%	110	32	29.1%
2018	125	46	21	45.7%	55	6	10.9%	101	27	26.7%

See also:

• Iowa House of Representatives elections, 2018
• Iowa State Senate elections, 2018

Kansas

There were 125 seats up for election in Kansas. A total of 105 incumbents advanced to the general election: 40 Democrats and 65 Republicans. Of that total, 52 incumbents—23 Democrats and 29 Republicans—had no general election challengers, representing 49.5% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Kansas, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	125	40	23	57.5%	65	29	44.6%	105	52	49.5%
Senate	Did not hold elections
Total	125	40	23	57.5%	65	29	44.6%	105	52	49.5%

2010-2018

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

State legislative incumbents in contested primaries in Kansas, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	125	44	13	29.5%	66	33	50.0%	110	46	41.8%
2012	165	36	6	16.7%	71	24	33.8%	107	30	28.0%
2014	125	29	11	37.9%	80	33	41.3%	109	44	40.4%
2016	165	33	20	60.6%	84	21	25.0%	117	41	35.0%
2018	125	40	23	57.5%	65	29	44.6%	105	52	49.5%

See also:

• Kansas House of Representatives elections, 2018

Kentucky

There were 119 seats up for election in Kentucky. A total of 94 incumbents advanced to the general election: 28 Democrats and 66 Republicans. Of that total, 16 incumbents—eight Democrats and eight Republicans—had no general election challengers, representing 17.0% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Kentucky, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	100	25	7	28.0%	51	7	13.7%	76	14	18.4%
Senate	19	3	1	33.3%	15	1	6.7%	18	2	11.1%
Total	119	28	8	28.6%	66	8	12.1%	94	16	17.0%

2010-2018

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

State legislative incumbents in contested primaries in Kentucky, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	119	67	20	29.9%	42	25	59.5%	110	45	40.9%
2012	119	63	29	46.0%	41	28	68.3%	104	57	54.8%
2014	119	54	25	46.3%	52	30	57.7%	106	55	51.9%
2016	119	56	16	28.6%	51	31	60.8%	107	47	43.9%
2018	119	28	8	28.6%	66	8	12.1%	94	16	17.0%

See also:

• Kentucky House of Representatives elections, 2018
• Kentucky State Senate elections, 2018

Maine

There were 186 seats up for election in Maine. A total of 126 incumbents advanced to the general election: 73 Democrats, 50 Republicans, and three independent or minor party incumbents. Of that total, 12 incumbents—eight Democrats and four Republicans—had no general election challengers, representing 9.5% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Maine, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	151	58	7	12.1%	42	4	9.5%	103	11	10.7%
Senate	35	15	1	6.7%	8	0	0.0%	23	1	4.3%
Total	186	73	8	11.0%	50	4	8.0%	126	12	9.5%

2010-2018

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

State legislative incumbents in contested primaries in Maine, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	186	90	4	4.4%	49	3	6.1%	139	7	5.0%
2012	186	53	3	5.7%	66	4	6.1%	121	7	5.8%
2014	186	81	7	8.6%	42	5	11.9%	127	12	9.4%
2016	186	69	13	18.8%	78	6	7.7%	147	19	12.9%
2018	186	73	8	11.0%	50	4	8.0%	126	12	9.5%

See also:

• Maine House of Representatives elections, 2018
• Maine State Senate elections, 2018

Maryland

There were 188 seats up for election in Maryland. A total of 136 incumbents advanced to the general election: 83 Democrats and 53 Republicans. Of that total, 21 incumbents—19 Democrats and two Republicans—had no general election challengers, representing 15.4% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Maryland, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	141	63	14	22.2%	41	1	2.4%	104	15	14.4%
Senate	47	20	5	25.0%	12	1	8.3%	32	6	18.8%
Total	188	83	19	22.9%	53	2	3.8%	136	21	15.4%

2010-2018

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

State legislative incumbents in contested primaries in Maryland, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	188	114	29	25.4%	37	4	10.8%	151	33	21.9%
2012	Did not hold elections.
2014	188	95	28	29.5%	31	4	12.9%	126	32	25.4%
2016	Did not hold elections.
2018	188	83	19	22.9%	53	2	3.8%	136	21	15.4%

See also:

• Maryland House of Delegates elections, 2018
• Maryland State Senate elections, 2018

Massachusetts

There were 200 seats up for election in Massachusetts. A total of 173 incumbents advanced to the general election: 134 Democrats, 37 Republicans, and two independent or minor party incumbents. Of that total, 116 incumbents—103 Democrats and 13 Republicans—had no general election challengers, representing 67.1% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Massachusetts, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	160	105	81	77.1%	30	11	36.7%	137	92	67.2%
Senate	40	29	22	75.9%	7	2	28.6%	36	24	66.7%
Total	200	134	103	76.9%	37	13	35.1%	173	116	67.1%

2010-2018

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

State legislative incumbents in contested primaries in Massachusetts, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	200	150	74	49.3%	15	11	73.3%	165	85	51.5%
2012	200	149	103	69.1%	35	19	54.3%	184	122	66.3%
2014	200	148	87	58.8%	30	18	60.0%	178	105	59.0%
2016	200	145	115	79.3%	40	19	47.5%	185	134	72.4%
2018	200	134	103	76.9%	37	13	35.1%	173	116	67.1%

See also:

• Massachusetts House of Representatives elections, 2018
• Massachusetts State Senate elections, 2018

Michigan

There were 148 seats up for election in Michigan. A total of 75 incumbents advanced to the general election: 30 Democrats and 45 Republicans. Of that total, no incumbents had no general election challengers, representing 0.0% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Michigan, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	110	28	0	0.0%	37	0	0.0%	65	0	0.0%
Senate	38	2	0	0.0%	8	0	0.0%	10	0	0.0%
Total	148	30	0	0.0%	45	0	0.0%	75	0	0.0%

2010-2018

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

State legislative incumbents in contested primaries in Michigan, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	148	40	0	0.0%	28	2	7.1%	68	2	2.9%
2012	110	32	0	0.0%	55	1	1.8%	87	1	1.1%
2014	148	40	0	0.0%	56	0	0.0%	96	0	0.0%
2016	110	32	0	0.0%	36	0	0.0%	68	0	0.0%
2018	148	30	0	0.0%	45	0	0.0%	75	0	0.0%

See also:

• Michigan House of Representatives elections, 2018
• Michigan State Senate elections, 2018

Minnesota

There were 134 seats up for election in Minnesota. A total of 110 incumbents advanced to the general election: 41 Democrats and 69 Republicans. Of that total, two incumbents—two Democrats and no Republicans—had no general election challengers, representing 1.8% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Minnesota, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	134	41	2	4.9%	69	0	0.0%	110	2	1.8%
Senate	Did not hold elections
Total	134	41	2	4.9%	69	0	0.0%	110	2	1.8%

2010-2018

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

State legislative incumbents in contested primaries in Minnesota, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	201	120	0	0.0%	55	6	10.9%	175	6	3.4%
2012	201	71	5	7.0%	81	2	2.5%	152	7	4.6%
2014	134	68	1	1.5%	51	8	15.7%	119	9	7.6%
2016	201	80	3	3.8%	89	2	2.2%	169	5	3.0%
2018	134	41	2	4.9%	69	0	0.0%	110	2	1.8%

See also:

• Minnesota House of Representatives elections, 2018

Missouri

There were 180 seats up for election in Missouri. A total of 115 incumbents advanced to the general election: 33 Democrats and 82 Republicans. Of that total, 28 incumbents—15 Democrats and 13 Republicans—had no general election challengers, representing 24.3% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Missouri, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	163	32	15	46.9%	75	13	17.3%	107	28	26.2%
Senate	17	1	0	0.0%	7	0	0.0%	8	0	0.0%
Total	180	33	15	45.5%	82	13	15.9%	115	28	24.3%

2010-2018

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

State legislative incumbents in contested primaries in Missouri, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	180	53	18	34.0%	49	26	53.1%	102	44	43.1%
2012	180	36	22	61.1%	82	36	43.9%	118	58	49.2%
2014	180	48	23	47.9%	100	54	54.0%	148	77	52.0%
2016	180	32	18	56.3%	104	51	49.0%	137	69	50.4%
2018	180	33	15	45.5%	82	13	15.9%	115	28	24.3%

See also:

• Missouri House of Representatives elections, 2018
• Missouri State Senate elections, 2018

Montana

There were 125 seats up for election in Montana. A total of 87 incumbents advanced to the general election: 34 Democrats and 53 Republicans. Of that total, 20 incumbents—13 Democrats and seven Republicans—had no general election challengers, representing 23.0% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Montana, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	100	28	12	42.9%	43	5	11.6%	71	17	23.9%
Senate	25	6	1	16.7%	10	2	20.0%	16	3	18.8%
Total	125	34	13	38.2%	53	7	13.2%	87	20	23.0%

2010-2018

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

State legislative incumbents in contested primaries in Montana, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	126	33	8	24.2%	40	13	32.5%	73	21	28.8%
2012	126	26	5	19.2%	53	11	20.8%	79	16	20.3%
2014	125	30	13	43.3%	46	1	2.2%	76	14	18.4%
2016	125	35	14	40.0%	42	6	14.3%	77	20	26.0%
2018	125	34	13	38.2%	53	7	13.2%	87	20	23.0%

See also:

• Montana House of Representatives elections, 2018
• Montana State Senate elections, 2018

Nevada

There were 53 seats up for election in Nevada. A total of 37 incumbents advanced to the general election: 24 Democrats and 13 Republicans. Of that total, 12 incumbents—nine Democrats and three Republicans—had no general election challengers, representing 32.4% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Nevada, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	42	21	8	38.1%	10	3	30.0%	31	11	35.5%
Senate	11	3	1	33.3%	3	0	0.0%	6	1	16.7%
Total	53	24	9	37.5%	13	3	23.1%	37	12	32.4%

2010-2018

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

State legislative incumbents in contested primaries in Nevada, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	53	17	0	0.0%	8	0	0.0%	25	0	0.0%
2012	52	23	5	21.7%	11	5	45.5%	34	10	29.4%
2014	53	26	4	15.4%	17	5	29.4%	43	9	20.9%
2016	52	21	3	14.3%	17	5	29.4%	39	8	20.5%
2018	53	24	9	37.5%	13	3	23.1%	37	12	32.4%

See also:

• Nevada State Assembly elections, 2018
• Nevada State Senate elections, 2018

New Hampshire

There were 424 seats up for election in New Hampshire. A total of 303 incumbents advanced to the general election: 141 Democrats, 159 Republicans, and three independent or minor party incumbents. Of that total, 23 incumbents—17 Democrats and six Republicans—had no general election challengers, representing 7.6% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in New Hampshire, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	400	132	16	12.1%	146	6	4.1%	281	22	7.8%
Senate	24	9	1	11.1%	13	0	0.0%	22	1	4.5%
Total	424	141	17	12.1%	159	6	3.8%	303	23	7.6%

2010-2018

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

State legislative incumbents in contested primaries in New Hampshire, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	424	174	1	0.6%	137	6	4.4%	311	7	2.3%
2012	424	82	17	20.7%	211	14	6.6%	293	31	10.6%
2014	424	169	17	10.1%	135	17	12.6%	304	34	11.2%
2016	424	128	24	18.8%	169	3	1.8%	297	27	9.1%
2018	424	141	17	12.1%	159	6	3.8%	303	23	7.6%

See also:

• New Hampshire House of Representatives elections, 2018
• New Hampshire State Senate elections, 2018

New Mexico

There were 70 seats up for election in New Mexico. A total of 58 incumbents advanced to the general election: 32 Democrats and 26 Republicans. Of that total, 33 incumbents—21 Democrats and 12 Republicans—had no general election challengers, representing 56.9% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in New Mexico, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	70	32	21	65.6%	26	12	46.2%	58	33	56.9%
Senate	Did not hold elections
Total	70	32	21	65.6%	26	12	46.2%	58	33	56.9%

2010-2018

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

State legislative incumbents in contested primaries in New Mexico, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	70	43	20	46.5%	22	15	68.2%	65	35	53.8%
2012	112	45	25	55.6%	39	24	61.5%	85	49	57.6%
2014	70	31	17	54.8%	27	11	40.7%	58	28	48.3%
2016	112	52	41	78.8%	51	24	47.1%	103	65	63.1%
2018	70	32	21	65.6%	26	12	46.2%	58	33	56.9%

See also:

• New Mexico House of Representatives elections, 2018

New York

There were 213 seats up for election in New York. A total of 185 incumbents advanced to the general election: 121 Democrats, 63 Republicans, and one independent or minor party incumbent. Of that total, 61 incumbents—48 Democrats and 13 Republicans—had no general election challengers, representing 33.0% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in New York, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	150	96	39	40.6%	37	7	18.9%	134	46	34.3%
Senate	63	25	9	36.0%	26	6	23.1%	51	15	29.4%
Total	213	121	48	39.7%	63	13	20.6%	185	61	33.0%

2010-2018

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

State legislative incumbents in contested primaries in New York, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	212	124	20	16.1%	59	14	23.7%	183	34	18.6%
2012	213	116	38	32.8%	71	20	28.2%	187	58	31.0%
2014	213	125	44	35.2%	65	29	44.6%	190	73	38.4%
2016	213	126	44	34.9%	64	22	34.4%	190	66	34.7%
2018	213	121	48	39.7%	63	13	20.6%	185	61	33.0%

See also:

• New York State Assembly elections, 2018
• New York State Senate elections, 2018

North Carolina

There were 170 seats up for election in North Carolina. A total of 146 incumbents advanced to the general election: 54 Democrats and 92 Republicans. Of that total, one incumbent—a Democrat—had no general election challengers, representing 0.7% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in North Carolina, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	120	40	1	2.5%	65	0	0.0%	105	1	1.0%
Senate	50	14	0	0.0%	27	0	0.0%	41	0	0.0%
Total	170	54	1	1.9%	92	0	0.0%	146	1	0.7%

2010-2018

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

State legislative incumbents in contested primaries in North Carolina, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	170	83	12	14.5%	63	36	57.1%	146	48	32.9%
2012	170	47	28	59.6%	70	27	38.6%	117	55	47.0%
2014	170	52	31	59.6%	102	39	38.2%	154	70	45.5%
2016	170	57	31	54.4%	95	37	38.9%	152	68	44.7%
2018	170	54	1	1.9%	92	0	0.0%	146	1	0.7%

See also:

• North Carolina House of Representatives elections, 2018
• North Carolina State Senate elections, 2018

North Dakota

There were 72 seats up for election in North Dakota. A total of 59 incumbents advanced to the general election: 11 Democrats and 48 Republicans. Of that total, 10 incumbents—three Democrats and seven Republicans—had no general election challengers, representing 16.9% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in North Dakota, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	48	7	2	28.6%	33	5	15.2%	40	7	17.5%
Senate	24	4	1	25.0%	15	2	13.3%	19	3	15.8%
Total	72	11	3	27.3%	48	7	14.6%	59	10	16.9%

2010-2018

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

State legislative incumbents in contested primaries in North Dakota, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	72	24	2	8.3%	33	10	30.3%	57	12	21.1%
2012	75	18	2	11.1%	39	6	15.4%	57	8	14.0%
2014	72	10	5	50.0%	49	12	24.5%	59	17	28.8%
2016	69	21	0	0.0%	31	4	12.9%	52	4	7.7%
2018	72	11	3	27.3%	48	7	14.6%	59	10	16.9%

See also:

• North Dakota House of Representatives elections, 2018
• North Dakota State Senate elections, 2018

Ohio

There were 116 seats up for election in Ohio. A total of 74 incumbents advanced to the general election: 24 Democrats and 50 Republicans. Of that total, six incumbents—six Democrats and no Republicans—had no general election challengers, representing 8.1% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Ohio, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	99	21	6	28.6%	46	0	0.0%	67	6	9.0%
Senate	17	3	0	0.0%	4	0	0.0%	7	0	0.0%
Total	116	24	6	25.0%	50	0	0.0%	74	6	8.1%

2010-2018

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

State legislative incumbents in contested primaries in Ohio, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	116	46	2	4.3%	40	7	17.5%	86	9	10.5%
2012	117	35	9	25.7%	65	5	7.7%	100	14	14.0%
2014	116	30	4	13.3%	56	12	21.4%	86	16	18.6%
2016	115	28	8	28.6%	59	16	27.1%	87	24	27.6%
2018	116	24	6	25.0%	50	0	0.0%	74	6	8.1%

See also:

• Ohio House of Representatives elections, 2018
• Ohio State Senate elections, 2018

Oklahoma

There were 125 seats up for election in Oklahoma. A total of 70 incumbents advanced to the general election: 22 Democrats and 48 Republicans. Of that total, 26 incumbents—14 Democrats and 12 Republicans—had no general election challengers, representing 37.1% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Oklahoma, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	101	19	11	57.9%	39	11	28.2%	58	22	37.9%
Senate	24	3	3	100.0%	9	1	11.1%	12	4	33.3%
Total	125	22	14	63.6%	48	12	25.0%	70	26	37.1%

2010-2018

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

State legislative incumbents in contested primaries in Oklahoma, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	125	40	20	50.0%	62	41	66.1%	102	61	59.8%
2012	125	30	20	66.7%	71	51	71.8%	101	71	70.3%
2014	125	25	17	68.0%	70	49	70.0%	95	66	69.5%
2016	125	20	9	45.0%	61	20	32.8%	81	29	35.8%
2018	125	22	14	63.6%	48	12	25.0%	70	26	37.1%

See also:

• Oklahoma House of Representatives elections, 2018
• Oklahoma State Senate elections, 2018

Oregon

There were 75 seats up for election in Oregon. A total of 66 incumbents advanced to the general election: 42 Democrats and 24 Republicans. Of that total, 16 incumbents—13 Democrats and three Republicans—had no general election challengers, representing 24.2% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Oregon, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	60	33	11	33.3%	20	3	15.0%	53	14	26.4%
Senate	15	9	2	22.2%	4	0	0.0%	13	2	15.4%
Total	75	42	13	31.0%	24	3	12.5%	66	16	24.2%

2010-2018

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

State legislative incumbents in contested primaries in Oregon, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	76	43	2	4.7%	25	2	8.0%	68	4	5.9%
2012	76	30	3	10.0%	34	7	20.6%	64	10	15.6%
2014	75	38	10	26.3%	21	7	33.3%	59	17	28.8%
2016	75	30	6	20.0%	28	7	25.0%	58	13	22.4%
2018	75	42	13	31.0%	24	3	12.5%	66	16	24.2%

See also:

• Oregon House of Representatives elections, 2018
• Oregon State Senate elections, 2018

Pennsylvania

There were 228 seats up for election in Pennsylvania. A total of 189 incumbents advanced to the general election: 78 Democrats and 111 Republicans. Of that total, 74 incumbents—53 Democrats and 21 Republicans—had no general election challengers, representing 39.2% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Pennsylvania, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	203	71	48	67.6%	98	21	21.4%	169	69	40.8%
Senate	25	7	5	71.4%	13	0	0.0%	20	5	25.0%
Total	228	78	53	67.9%	111	21	18.9%	189	74	39.2%

2010-2018

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

State legislative incumbents in contested primaries in Pennsylvania, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	228	101	41	40.6%	106	43	40.6%	207	84	40.6%
2012	228	83	43	51.8%	113	51	45.1%	196	94	48.0%
2014	228	90	56	62.2%	108	57	52.8%	198	113	57.1%
2016	228	83	46	55.4%	122	50	41.0%	205	96	46.8%
2018	228	78	53	67.9%	111	21	18.9%	189	74	39.2%

See also:

• Pennsylvania House of Representatives elections, 2018
• Pennsylvania State Senate elections, 2018

Rhode Island

There were 113 seats up for election in Rhode Island. A total of 95 incumbents advanced to the general election: 83 Democrats and 12 Republicans. Of that total, 51 incumbents—48 Democrats and three Republicans—had no general election challengers, representing 53.7% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Rhode Island, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	75	55	35	63.6%	9	2	22.2%	64	37	57.8%
Senate	38	28	13	46.4%	3	1	33.3%	31	14	45.2%
Total	113	83	48	57.8%	12	3	25.0%	95	51	53.7%

2010-2018

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

State legislative incumbents in contested primaries in Rhode Island, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	113	79	15	19.0%	8	3	37.5%	88	18	20.5%
2012	113	78	36	46.2%	15	4	26.7%	94	40	42.6%
2014	113	92	58	63.0%	9	3	33.3%	102	61	59.8%
2016	113	85	44	51.8%	13	4	30.8%	99	49	49.5%
2018	113	83	48	57.8%	12	3	25.0%	95	51	53.7%

See also:

• Rhode Island House of Representatives elections, 2018
• Rhode Island State Senate elections, 2018

South Carolina

There were 124 seats up for election in South Carolina. A total of 111 incumbents advanced to the general election: 39 Democrats and 72 Republicans. Of that total, 61 incumbents—24 Democrats and 37 Republicans—had no general election challengers, representing 55.0% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in South Carolina, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	124	39	24	61.5%	72	37	51.4%	111	61	55.0%
Senate	Did not hold elections
Total	124	39	24	61.5%	72	37	51.4%	111	61	55.0%

2010-2018

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

State legislative incumbents in contested primaries in South Carolina, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	124	48	33	68.8%	58	37	63.8%	106	70	66.0%
2012	170	55	41	74.5%	89	68	76.4%	144	109	75.7%
2014	124	41	28	68.3%	71	55	77.5%	112	83	74.1%
2016	170	56	43	76.8%	88	69	78.4%	144	112	77.8%
2018	124	39	24	61.5%	72	37	51.4%	111	61	55.0%

See also:

• South Carolina House of Representatives elections, 2018

South Dakota

There were 105 seats up for election in South Dakota. A total of 76 incumbents advanced to the general election: nine Democrats and 67 Republicans. Of that total, four incumbents—four Democrats and no Republicans—had no general election challengers, representing 5.3% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in South Dakota, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	70	6	3	50.0%	43	0	0.0%	49	3	6.1%
Senate	35	3	1	33.3%	24	0	0.0%	27	1	3.7%
Total	105	9	4	44.4%	67	0	0.0%	76	4	5.3%

2010-2018

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

State legislative incumbents in contested primaries in South Dakota, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	105	25	6	24.0%	44	11	25.0%	69	17	24.6%
2012	105	13	6	46.2%	53	14	26.4%	66	20	30.3%
2014	105	16	7	43.8%	58	23	39.7%	74	30	40.5%
2016	105	10	5	50.0%	50	11	22.0%	60	16	26.7%
2018	105	9	4	44.4%	67	0	0.0%	76	4	5.3%

See also:

• South Dakota House of Representatives elections, 2018
• South Dakota State Senate elections, 2018

Tennessee

There were 116 seats up for election in Tennessee. A total of 85 incumbents advanced to the general election: 19 Democrats and 66 Republicans. Of that total, 26 incumbents—15 Democrats and 11 Republicans—had no general election challengers, representing 30.6% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Tennessee, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	99	18	14	77.8%	54	9	16.7%	72	23	31.9%
Senate	17	1	1	100.0%	12	2	16.7%	13	3	23.1%
Total	116	19	15	78.9%	66	11	16.7%	85	26	30.6%

2010-2018

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

State legislative incumbents in contested primaries in Tennessee, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	116	54	17	31.5%	49	27	55.1%	104	44	42.3%
2012	115	25	12	48.0%	60	28	46.7%	86	40	46.5%
2014	116	27	13	48.1%	69	44	63.8%	96	57	59.4%
2016	115	25	13	52.0%	81	31	38.3%	106	44	41.5%
2018	116	19	15	78.9%	66	11	16.7%	85	26	30.6%

See also:

• Tennessee House of Representatives elections, 2018
• Tennessee State Senate elections, 2018

Texas

There were 165 seats up for election in Texas. A total of 142 incumbents advanced to the general election: 52 Democrats and 90 Republicans. Of that total, 57 incumbents—37 Democrats and 20 Republicans—had no general election challengers, representing 40.1% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Texas, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	150	49	36	73.5%	80	19	23.8%	129	55	42.6%
Senate	15	3	1	33.3%	10	1	10.0%	13	2	15.4%
Total	165	52	37	71.2%	90	20	22.2%	142	57	40.1%

2010-2018

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

State legislative incumbents in contested primaries in Texas, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	166	71	26	36.6%	80	31	38.8%	151	57	37.7%
2012	181	52	21	40.4%	83	37	44.6%	135	58	43.0%
2014	165	55	30	54.5%	83	0	0.0%	138	30	21.7%
2016	166	53	34	64.2%	90	44	48.9%	144	78	54.2%
2018	165	52	37	71.2%	90	20	22.2%	142	57	40.1%

See also:

• Texas House of Representatives elections, 2018
• Texas State Senate elections, 2018

Utah

There were 89 seats up for election in Utah. A total of 67 incumbents advanced to the general election: 14 Democrats and 53 Republicans. Of that total, eight incumbents—one Democrat and seven Republicans—had no general election challengers, representing 11.9% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Utah, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	75	11	1	9.1%	48	6	12.5%	59	7	11.9%
Senate	14	3	0	0.0%	5	1	20.0%	8	1	12.5%
Total	89	14	1	7.1%	53	7	13.2%	67	8	11.9%

2010-2018

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

State legislative incumbents in contested primaries in Utah, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	90	27	1	3.7%	52	12	23.1%	79	13	16.5%
2012	91	15	0	0.0%	55	11	20.0%	70	11	15.7%
2014	89	13	4	30.8%	61	13	21.3%	74	17	23.0%
2016	90	13	5	38.5%	63	21	33.3%	76	26	34.2%
2018	89	14	1	7.1%	53	7	13.2%	67	8	11.9%

See also:

• Utah House of Representatives elections, 2018
• Utah State Senate elections, 2018

Vermont

There were 180 seats up for election in Vermont. A total of 145 incumbents advanced to the general election: 91 Democrats, 44 Republicans, and 10 independent or minor party incumbents. Of that total, 55 incumbents—41 Democrats, 11 Republicans, and three independent or minor party incumbents—had no general election challengers, representing 37.9% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Vermont, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	150	70	39	55.7%	40	9	22.5%	120	51	42.5%
Senate	30	21	2	9.5%	4	2	50.0%	25	4	16.0%
Total	180	91	41	45.1%	44	11	25.0%	145	55	37.9%

2010-2018

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

State legislative incumbents in contested primaries in Vermont, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	180	106	27	25.5%	47	20	42.6%	158	47	29.7%
2012	180	106	51	48.1%	45	17	37.8%	155	70	45.2%
2014	180	105	41	39.0%	44	19	43.2%	152	61	40.1%
2016	180	88	31	35.2%	57	19	33.3%	151	52	34.4%
2018	180	91	41	45.1%	44	11	25.0%	145	55	37.9%

See also:

• Vermont House of Representatives elections, 2018
• Vermont State Senate elections, 2018

Washington

There were 123 seats up for election in Washington. A total of 104 incumbents advanced to the general election: 58 Democrats and 46 Republicans. Of that total, 15 incumbents—13 Democrats and two Republicans—had no general election challengers, representing 14.4% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Washington, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	98	45	13	28.9%	37	1	2.7%	82	14	17.1%
Senate	25	13	0	0.0%	9	1	11.1%	22	1	4.5%
Total	123	58	13	22.4%	46	2	4.3%	104	15	14.4%

2010-2018

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

State legislative incumbents in contested primaries in Washington, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	123	64	7	10.9%	38	16	42.1%	102	23	22.5%
2012	124	53	11	20.8%	44	17	38.6%	97	28	28.9%
2014	123	63	10	15.9%	47	10	21.3%	110	20	18.2%
2016	124	51	14	27.5%	51	11	21.6%	102	25	24.5%
2018	123	58	13	22.4%	46	2	4.3%	104	15	14.4%

See also:

• Washington House of Representatives elections, 2018
• Washington State Senate elections, 2018

West Virginia

There were 117 seats up for election in West Virginia. A total of 94 incumbents advanced to the general election: 37 Democrats, 56 Republicans, and one independent or minor party incumbent. Of that total, six incumbents—three Democrats and three Republicans—had no general election challengers, representing 6.4% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in West Virginia, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	100	31	3	9.7%	48	3	6.3%	80	6	7.5%
Senate	17	6	0	0.0%	8	0	0.0%	14	0	0.0%
Total	117	37	3	8.1%	56	3	5.4%	94	6	6.4%

2010-2018

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

State legislative incumbents in contested primaries in West Virginia, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	117	74	19	25.7%	25	5	20.0%	99	24	24.2%
2012	117	64	13	20.3%	32	10	31.3%	96	23	24.0%
2014	117	54	1	1.9%	44	10	22.7%	98	11	11.2%
2016	117	34	1	2.9%	56	4	7.1%	90	5	5.6%
2018	117	37	3	8.1%	56	3	5.4%	94	6	6.4%

See also:

• West Virginia House of Delegates elections, 2018
• West Virginia State Senate elections, 2018

Wisconsin

There were 116 seats up for election in Wisconsin. A total of 98 incumbents advanced to the general election: 35 Democrats and 63 Republicans. Of that total, 31 incumbents—24 Democrats and seven Republicans—had no general election challengers, representing 31.6% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Wisconsin, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	99	29	22	75.9%	55	5	9.1%	84	27	32.1%
Senate	17	6	2	33.3%	8	2	25.0%	14	4	28.6%
Total	116	35	24	68.6%	63	7	11.1%	98	31	31.6%

2010-2018

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

State legislative incumbents in contested primaries in Wisconsin, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	116	51	8	15.7%	40	13	32.5%	92	21	22.8%
2012	115	34	16	47.1%	58	6	10.3%	92	22	23.9%
2014	116	36	19	52.8%	51	23	45.1%	87	42	48.3%
2016	115	39	26	66.7%	63	19	30.2%	102	45	44.1%
2018	116	35	24	68.6%	63	7	11.1%	98	31	31.6%

See also:

• Wisconsin State Assembly elections, 2018
• Wisconsin State Senate elections, 2018

Wyoming

There were 75 seats up for election in Wyoming. A total of 62 incumbents advanced to the general election: nine Democrats and 53 Republicans. Of that total, 40 incumbents—five Democrats and 35 Republicans—had no general election challengers, representing 64.5% of incumbents on the general election ballot.

In 2018

Statistics from 2018 are shown below. Hover over column headings to learn more about their contents.

State legislative incumbents with no general election challengers in Wyoming, 2018
Chamber	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
House	60	7	4	57.1%	46	30	65.2%	53	34	64.2%
Senate	15	2	1	50.0%	7	5	71.4%	9	6	66.7%
Total	75	9	5	55.6%	53	35	66.0%	62	40	64.5%

2010-2018

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

State legislative incumbents in contested primaries in Wyoming, 2010-2018
Year	Seats
		Democratic			Republican			Total
		Incs.	Uncont.	%	Incs.	Uncont.	%	Incs.	Uncont.	%
2010	75	18	6	33.3%	42	35	83.3%	60	41	68.3%
2012	75	9	3	33.3%	48	37	77.1%	57	40	70.2%
2014	75	9	5	55.6%	51	36	70.6%	60	41	68.3%
2016	75	9	4	44.4%	44	9	20.5%	53	13	24.5%
2018	75	9	5	55.6%	53	35	66.0%	62	40	64.5%

See also:

• Wyoming House of Representatives elections, 2018
• Wyoming State Senate elections, 2018

Terms and definitions

Incumbent

See also: Incumbent

Ballotpedia defines incumbency by chamber. Under this definition, if an incumbent in House District 1 filed for re-election in House District 2, they would still be counted as an incumbent due to their remaining in the same chamber even though they ran for a different seat. If an incumbent in House District 1 filed to run in Senate District 2, they would not be counted as an incumbent in the Senate race since they are coming from a different chamber.

Ballotpedia uses the term re-elect to refer to any incumbent who is running in an election to retain their office, including incumbents who were originally appointed to their position.

Uncontested general election

See also: General election

An uncontested general election is one where there is one candidate running, meaning the candidate will automatically win the election.

Methodology

Candidacy withdrawals

See also: Signature requirements and deadlines for 2018 state government elections

In order to have their names printed on election ballots, candidates must submit information prior to a filing deadline. Filing deadlines are the dates by which candidates must submit required paperwork to state election administrators.

For major party candidates, filing deadlines always precede primaries. However, candidates may choose to withdraw before the primary or general takes place. Withdrawals include decisions to leave the race, disqualifications, and deaths. These withdrawals are either official or unofficial.

An official withdrawal means the candidate withdrew before a specific date set in state law and their name was removed from the primary or general ballot. If an incumbent officially withdrew before the general election, they are not included in any of the totals of this analysis, unless they later re-entered the race as a minor party or independent candidate.

An unofficial withdrawal means the candidate withdrew after a specific date set in state law, typically after ballots have been printed, meaning their name remains on the ballot even though they are not actively campaigning. If an incumbent unofficially withdrew, they are included in the totals of this analysis.

See also

• Election results, 2018: State legislatures
• State legislative elections, 2018
  • Impact of term limits on state legislative elections in 2018
  • Open seats in state legislative elections, 2018
  • Contested state legislative primaries, 2018
  • Major party competition in state legislative elections, 2018
  • State legislative incumbents in contested primaries, 2018
  • Incumbents defeated in state legislative elections, 2018
• Primary election competitiveness in state and federal government, 2018

Footnotes

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