Major party competition in state legislative elections, 2018

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Last updated on November 18, 2024

There were 6,065 state legislative seats up for election on November 6, 2018, in 46 states. Of that total, 2,046 (34%) were uncontested and had no major party competition. The remaining 4,019 (66%) were contested by both major parties. This was the smallest number and percentage of seats with no major party competition since Ballotpedia began gathering data in 2010.

A seat has major party competition when candidates from both major parties are on the general election ballot. When only one major party is running for a seat, it has no major party competition and is effectively guaranteed to the major party candidate on the ballot. Learn more about the terms and methodologies used in this analysis.

Ballotpedia uses the level of major party competition to help determine the overall competitiveness of an election cycle. A larger number of seats without major party competition indicates fewer options on the ballot. A smaller number indicates more options.

In 2018:

Democrats were guaranteed to win 1,293 seats (21%) that lacked Republican competition, a 2% increase from 2016.

Republicans were guaranteed to win 750 seats (12%) that lacked Democratic competition, a 39% decrease from 2016.

Overall, Democrats ran for 5,312 seats (88%) and Republicans ran for 4,769 (79%).

There were three seats guaranteed to minor party or independent candidates because no major party candidates ran.

The total number of seats without major party competition—2,046—was less than in 2016 (2,508), representing an 18% decrease.

Major party competition in state legislative elections, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	4,956	1,085	21.9%	622	12.6%	1,710	34.5%	3,246	65.5%
Senate	1,109	208	18.8%	128	11.5%	336	30.3%	773	69.7%
Total	6,065	1,293	21.3%	750	12.4%	2,046	33.7%	4,019	66.3%

The chart below compares states by the percentage of seats contested by each of the major parties. In states located in the upper-right corner, almost all seats were contested by both major parties.

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

Major party competition in state legislative elections, 2018
State	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
Nationwide	6,065	1,293	21.3%	750	12.4%	2,046	33.7%	4,019	66.3%
Alabama	140	30	21.4%	46	32.9%	76	54.3%	64	45.7%
Alaska	50	6	12.0%	6	12.0%	12	24.0%	38	76.0%
Arizona	90	23	25.6%	7	7.8%	30	33.3%	60	66.7%
Arkansas	118	20	16.9%	51	43.2%	71	60.2%	47	39.8%
California	100	27	27.0%	0	0.0%	27	27.0%	73	73.0%
Colorado	82	9	11.0%	1	1.2%	10	12.2%	72	87.8%
Connecticut	187	20	10.7%	5	2.7%	25	13.4%	162	86.6%
Delaware	51	13	25.5%	4	7.8%	17	33.3%	34	66.7%
Florida	140	36	25.7%	12	8.6%	48	34.3%	92	65.7%
Georgia	236	67	28.4%	78	33.1%	145	61.4%	91	38.6%
Hawaii	63	41	65.1%	2	3.2%	43	68.3%	20	31.7%
Idaho	105	3	2.9%	45	42.9%	48	45.7%	57	54.3%
Illinois	157	57	36.3%	23	14.6%	80	51.0%	77	49.0%
Indiana	125	22	17.6%	17	13.6%	39	31.2%	86	68.8%
Iowa	125	29	23.2%	7	5.6%	36	28.8%	89	71.2%
Kansas	125	25	20.0%	39	31.2%	64	51.2%	61	48.8%
Kentucky	119	8	6.7%	10	8.4%	18	15.1%	101	84.9%
Maine	186	18	9.7%	12	6.5%	30	16.1%	156	83.9%
Maryland	188	58	30.9%	13	6.9%	71	37.8%	117	62.2%
Massachusetts	200	126	63.0%	14	7.0%	140	70.0%	60	30.0%
Michigan	148	0	0.0%	0	0.0%	0	0.0%	148	100.0%
Minnesota	134	3	2.2%	0	0.0%	3	2.2%	131	97.8%
Missouri	180	29	16.1%	18	10.0%	47	26.1%	133	73.9%
Montana	125	21	16.8%	19	15.2%	40	32.0%	85	68.0%
Nebraska	24	4	16.7%	7	29.2%	11	45.8%	13	54.2%
Nevada	53	12	22.6%	5	9.4%	17	32.1%	36	67.9%
New Hampshire	424	61	14.4%	12	2.8%	73	17.2%	351	82.8%
New Mexico	70	25	35.7%	13	18.6%	38	54.3%	32	45.7%
New York	213	65	30.5%	19	8.9%	84	39.4%	129	60.6%
North Carolina	170	2	1.2%	1	0.6%	3	1.8%	167	98.2%
North Dakota	72	3	4.2%	14	19.4%	17	23.6%	55	76.4%
Ohio	116	11	9.5%	0	0.0%	11	9.5%	105	90.5%
Oklahoma	125	15	12.0%	19	15.2%	34	27.2%	91	72.8%
Oregon	73	20	27.4%	5	6.8%	25	34.2%	48	65.8%
Pennsylvania	228	61	26.8%	28	12.3%	89	39.0%	139	61.0%
Rhode Island	113	66	58.4%	4	3.5%	70	61.9%	43	38.1%
South Carolina	124	33	26.6%	46	37.1%	79	63.7%	45	36.3%
South Dakota	105	8	7.6%	8	7.6%	16	15.2%	89	84.8%
Tennessee	116	20	17.2%	11	9.5%	31	26.7%	85	73.3%
Texas	165	38	23.0%	20	12.1%	58	35.2%	107	64.8%
Utah	89	2	2.2%	18	20.2%	20	22.5%	69	77.5%
Vermont	180	81	45.0%	27	15.0%	111	61.7%	69	38.3%
Washington	123	30	24.4%	3	2.4%	33	26.8%	90	73.2%
West Virginia	117	8	6.8%	7	6.0%	15	12.8%	102	87.2%
Wisconsin	116	32	27.6%	10	8.6%	42	36.2%	74	63.8%
Wyoming	75	5	6.7%	44	58.7%	49	65.3%	26	34.7%

Historical comparison

The chart below shows a breakdown of major party competition in state legislative elections from 2010 to 2018.

Click [show] on the table below to view overall major party competition statistics by state from 2010 to 2018. Hover over column headings to learn more about their contents.

Major party competition in state legislative elections, 2010-2018
State
	2010			2012			2014			2016			2018
	D	R	C	D	R	C	D	R	C	D	R	C	D	R	C
Nationwide	16%	19%	65%	19%	21%	60%	21%	23%	56%	22%	21%	58%	21%	12%	66%
Alabama	26%	29%	45%	-	-	-	18%	43%	39%	-	-	-	21%	33%	46%
Alaska	24%	20%	56%	8%	22%	69%	22%	11%	67%	22%	26%	52%	12%	12%	76%
Arizona	19%	24%	57%	26%	26%	49%	17%	24%	59%	29%	26%	46%	26%	8%	67%
Arkansas	45%	22%	32%	25%	27%	47%	28%	41%	31%	23%	53%	24%	17%	43%	40%
California	6%	2%	92%	19%	7%	74%	18%	7%	75%	22%	5%	73%	27%	0%	73%
Colorado	1%	14%	85%	0%	14%	86%	4%	20%	77%	10%	10%	81%	11%	1%	88%
Connecticut	16%	10%	75%	13%	9%	79%	16%	12%	72%	12%	14%	74%	11%	3%	87%
Delaware	19%	15%	65%	37%	13%	50%	29%	14%	57%	38%	15%	46%	25%	8%	67%
Florida	20%	30%	50%	16%	39%	45%	21%	38%	41%	23%	31%	46%	26%	9%	66%
Georgia	31%	36%	33%	27%	50%	23%	28%	51%	20%	28%	54%	19%	28%	33%	39%
Hawaii	5%	5%	91%	36%	3%	62%	32%	0%	68%	48%	3%	48%	65%	3%	32%
Idaho	3%	46%	51%	1%	25%	74%	4%	44%	52%	6%	35%	59%	3%	43%	54%
Illinois	32%	11%	58%	33%	24%	43%	36%	25%	39%	41%	22%	37%	36%	15%	49%
Indiana	5%	23%	72%	13%	21%	66%	16%	34%	50%	18%	18%	64%	18%	14%	69%
Iowa	10%	22%	67%	10%	18%	72%	28%	22%	50%	17%	15%	68%	23%	6%	71%
Kansas	12%	31%	57%	4%	27%	70%	10%	30%	60%	14%	19%	67%	20%	31%	49%
Kentucky	19%	24%	56%	29%	27%	45%	24%	27%	50%	14%	27%	59%	7%	8%	85%
Maine	3%	3%	94%	3%	6%	91%	6%	8%	87%	9%	5%	86%	10%	6%	84%
Maryland	27%	4%	69%	-	-	-	32%	4%	64%	-	-	-	31%	7%	62%
Massachusetts	46%	6%	48%	57%	10%	33%	53%	9%	39%	67%	10%	23%	63%	7%	30%
Michigan	0%	2%	98%	0%	2%	98%	0%	0%	100%	0%	0%	100%	0%	0%	100%
Minnesota	0%	3%	97%	3%	1%	96%	1%	6%	93%	2%	1%	97%	2%	0%	98%
Missouri	17%	26%	57%	18%	32%	49%	14%	36%	49%	19%	39%	42%	16%	10%	74%
Montana	9%	19%	72%	7%	13%	79%	15%	1%	84%	14%	8%	78%	17%	15%	68%
Nebraska	13%	50%	38%	16%	32%	52%	8%	58%	33%	16%	40%	44%	17%	29%	54%
Nevada	2%	6%	92%	12%	12%	77%	19%	21%	60%	10%	15%	75%	23%	9%	68%
New Hampshire	5%	8%	86%	9%	9%	82%	10%	11%	79%	13%	8%	79%	14%	3%	83%
New Mexico	29%	24%	47%	29%	23%	48%	31%	19%	50%	40%	22%	38%	36%	19%	46%
New York	15%	8%	77%	27%	10%	62%	27%	15%	58%	31%	12%	58%	31%	9%	61%
North Carolina	8%	25%	67%	20%	23%	57%	21%	26%	52%	22%	24%	54%	1%	1%	98%
North Dakota	4%	24%	72%	7%	11%	83%	8%	25%	67%	1%	9%	90%	4%	19%	76%
Ohio	8%	7%	85%	8%	7%	85%	6%	13%	81%	7%	19%	74%	9%	0%	91%
Oklahoma	18%	39%	43%	17%	48%	35%	17%	46%	37%	9%	22%	70%	12%	15%	73%
Oregon	4%	5%	91%	7%	14%	79%	23%	13%	64%	24%	17%	59%	27%	7%	66%
Pennsylvania	19%	22%	59%	23%	25%	52%	27%	29%	44%	23%	25%	51%	27%	12%	61%
Rhode Island	34%	4%	63%	54%	4%	42%	70%	4%	27%	65%	4%	30%	58%	4%	38%
South Carolina	29%	41%	30%	11%	49%	40%	26%	50%	24%	26%	50%	24%	27%	37%	36%
South Dakota	13%	29%	58%	10%	30%	60%	14%	38%	48%	13%	24%	63%	8%	8%	85%
Tennessee	15%	28%	58%	14%	36%	50%	15%	47%	38%	16%	36%	49%	17%	9%	73%
Texas	23%	38%	39%	21%	43%	36%	28%	39%	33%	27%	40%	34%	23%	12%	65%
Utah	1%	20%	79%	1%	22%	77%	4%	18%	78%	7%	31%	62%	2%	20%	78%
Vermont	30%	14%	56%	47%	18%	33%	45%	16%	38%	36%	16%	47%	45%	15%	38%
Washington	15%	20%	65%	19%	17%	64%	19%	18%	63%	27%	23%	50%	24%	2%	73%
West Virginia	26%	9%	65%	21%	13%	66%	3%	14%	84%	2%	6%	92%	7%	6%	87%
Wisconsin	12%	16%	72%	23%	5%	71%	22%	26%	52%	29%	21%	50%	28%	9%	64%
Wyoming	9%	57%	33%	5%	68%	27%	7%	60%	33%	8%	19%	73%	7%	59%	35%

Alabama

There were 140 seats up for election in Alabama, 64 (46%) of which were contested by both major parties. The remaining 76 seats (54%) had no major party competition.

• Democrats ran for 94 seats (67%), 30 of which had no Republican competition, representing 21% of all seats up for election.
• Republicans ran for 110 seats (79%), 46 of which had no Democratic competition, representing 33% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Alabama, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	105	23	21.9%	33	31.4%	56	53.3%	49	46.7%
Senate	35	7	20.0%	13	37.1%	20	57.1%	15	42.9%
Total	140	30	21.4%	46	32.9%	76	54.3%	64	45.7%

2010-2018

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

Major party competition in state legislative elections in Alabama, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	140	37	26.4%	40	28.6%	77	55.0%	63	45.0%
2012	Did not hold elections.
2014	140	25	17.9%	60	42.9%	85	60.7%	55	39.3%
2016	Did not hold elections.
2018	140	30	21.4%	46	32.9%	76	54.3%	64	45.7%

See also:

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

Alaska

There were 50 seats up for election in Alaska, 38 (76%) of which were contested by both major parties. The remaining 12 seats (24%) had no major party competition.

• Democrats ran for 44 seats (88%), six of which had no Republican competition, representing 12% of all seats up for election.
• Republicans ran for 44 seats (88%), six of which had no Democratic competition, representing 12% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Alaska, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	40	4	10.0%	4	10.0%	8	20.0%	32	80.0%
Senate	10	2	20.0%	2	20.0%	4	40.0%	6	60.0%
Total	50	6	12.0%	6	12.0%	12	24.0%	38	76.0%

2010-2018

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

Major party competition in state legislative elections in Alaska, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	50	12	24.0%	10	20.0%	22	44.0%	28	56.0%
2012	59	5	8.5%	13	22.0%	18	30.5%	41	69.5%
2014	54	12	22.2%	6	11.1%	18	33.3%	36	66.7%
2016	50	11	22.0%	13	26.0%	24	48.0%	26	52.0%
2018	50	6	12.0%	6	12.0%	12	24.0%	38	76.0%

See also:

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

Arizona

There were 90 seats up for election in Arizona, 60 (67%) of which were contested by both major parties. The remaining 30 seats (33%) had no major party competition.

• Democrats ran for 83 seats (92%), 23 of which had no Republican competition, representing 26% of all seats up for election.
• Republicans ran for 67 seats (74%), seven of which had no Democratic competition, representing 8% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Arizona, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	60	16	26.7%	6	10.0%	22	36.7%	38	63.3%
Senate	30	7	23.3%	1	3.3%	8	26.7%	22	73.3%
Total	90	23	25.6%	7	7.8%	30	33.3%	60	66.7%

2010-2018

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

Major party competition in state legislative elections in Arizona, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	90	17	18.9%	22	24.4%	39	43.3%	51	56.7%
2012	90	23	25.6%	23	25.6%	46	51.1%	44	48.9%
2014	90	15	16.7%	22	24.4%	37	41.1%	53	58.9%
2016	90	26	28.9%	23	25.6%	49	54.4%	41	45.6%
2018	90	23	25.6%	7	7.8%	30	33.3%	60	66.7%

See also:

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

Arkansas

There were 118 seats up for election in Arkansas, 47 (40%) of which were contested by both major parties. The remaining 71 seats (60%) had no major party competition.

• Democrats ran for 67 seats (57%), 20 of which had no Republican competition, representing 17% of all seats up for election.
• Republicans ran for 98 seats (83%), 51 of which had no Democratic competition, representing 43% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Arkansas, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	100	16	16.0%	44	44.0%	60	60.0%	40	40.0%
Senate	18	4	22.2%	7	38.9%	11	61.1%	7	38.9%
Total	118	20	16.9%	51	43.2%	71	60.2%	47	39.8%

2010-2018

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

Major party competition in state legislative elections in Arkansas, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	117	53	45.3%	26	22.2%	79	67.5%	38	32.5%
2012	135	34	25.2%	36	26.7%	71	52.6%	64	47.4%
2014	118	33	28.0%	48	40.7%	81	68.6%	37	31.4%
2016	117	27	23.1%	62	53.0%	89	76.1%	28	23.9%
2018	118	20	16.9%	51	43.2%	71	60.2%	47	39.8%

See also:

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

California

There were 100 seats up for election in California, 73 (73%) of which were contested by both major parties. The remaining 27 seats (27%) had no major party competition.

• Democrats ran for 100 seats (100%), 27 of which had no Republican competition, representing 27% of all seats up for election.
• Republicans ran for 73 seats (73%), all of which featured Democratic competition.

In 2018

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

Major party competition in state legislative elections in California, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	80	21	26.3%	0	0.0%	21	26.3%	59	73.8%
Senate	20	6	30.0%	0	0.0%	6	30.0%	14	70.0%
Total	100	27	27.0%	0	0.0%	27	27.0%	73	73.0%

2010-2018

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

Major party competition in state legislative elections in California, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	100	6	6.0%	2	2.0%	8	8.0%	92	92.0%
2012	100	19	19.0%	7	7.0%	26	26.0%	74	74.0%
2014	100	18	18.0%	7	7.0%	25	25.0%	75	75.0%
2016	100	22	22.0%	5	5.0%	27	27.0%	73	73.0%
2018	100	27	27.0%	0	0.0%	27	27.0%	73	73.0%

See also:

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

Colorado

There were 82 seats up for election in Colorado, 72 (88%) of which were contested by both major parties. The remaining 10 seats (12%) had no major party competition.

• Democrats ran for 81 seats (99%), nine of which had no Republican competition, representing 11% of all seats up for election.
• Republicans ran for 73 seats (89%), one of which had no Democratic competition, representing 1% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Colorado, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	65	8	12.3%	1	1.5%	9	13.8%	56	86.2%
Senate	17	1	5.9%	0	0.0%	1	5.9%	16	94.1%
Total	82	9	11.0%	1	1.2%	10	12.2%	72	87.8%

2010-2018

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

Major party competition in state legislative elections in Colorado, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	84	1	1.2%	12	14.3%	13	15.5%	71	84.5%
2012	85	0	0.0%	12	14.1%	12	14.1%	73	85.9%
2014	82	3	3.7%	16	19.5%	19	23.2%	63	76.8%
2016	83	8	9.6%	8	9.6%	16	19.3%	67	80.7%
2018	82	9	11.0%	1	1.2%	10	12.2%	72	87.8%

See also:

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

Connecticut

There were 187 seats up for election in Connecticut, 162 (87%) of which were contested by both major parties. The remaining 25 seats (13%) had no major party competition.

• Democrats ran for 182 seats (97%), 20 of which had no Republican competition, representing 11% of all seats up for election.
• Republicans ran for 167 seats (89%), five of which had no Democratic competition, representing 3% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Connecticut, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	151	18	11.9%	5	3.3%	23	15.2%	128	84.8%
Senate	36	2	5.6%	0	0.0%	2	5.6%	34	94.4%
Total	187	20	10.7%	5	2.7%	25	13.4%	162	86.6%

2010-2018

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

Major party competition in state legislative elections in Connecticut, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	187	29	15.5%	18	9.6%	47	25.1%	140	74.9%
2012	187	24	12.8%	16	8.6%	40	21.4%	147	78.6%
2014	187	30	16.0%	23	12.3%	53	28.3%	134	71.7%
2016	187	22	11.8%	27	14.4%	49	26.2%	138	73.8%
2018	187	20	10.7%	5	2.7%	25	13.4%	162	86.6%

See also:

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

Delaware

There were 51 seats up for election in Delaware, 34 (67%) of which were contested by both major parties. The remaining 17 seats (33%) had no major party competition.

• Democrats ran for 47 seats (92%), 13 of which had no Republican competition, representing 25% of all seats up for election.
• Republicans ran for 38 seats (75%), four of which had no Democratic competition, representing 8% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Delaware, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	41	11	26.8%	4	9.8%	15	36.6%	26	63.4%
Senate	10	2	20.0%	0	0.0%	2	20.0%	8	80.0%
Total	51	13	25.5%	4	7.8%	17	33.3%	34	66.7%

2010-2018

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

Major party competition in state legislative elections in Delaware, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	52	10	19.2%	8	15.4%	18	34.6%	34	65.4%
2012	62	23	37.1%	8	12.9%	31	50.0%	31	50.0%
2014	51	15	29.4%	7	13.7%	22	43.1%	29	56.9%
2016	52	20	38.5%	8	15.4%	28	53.8%	24	46.2%
2018	51	13	25.5%	4	7.8%	17	33.3%	34	66.7%

See also:

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

Florida

There were 140 seats up for election in Florida, 92 (66%) of which were contested by both major parties. The remaining 48 seats (34%) had no major party competition.

• Democrats ran for 128 seats (91%), 36 of which had no Republican competition, representing 26% of all seats up for election.
• Republicans ran for 104 seats (74%), 12 of which had no Democratic competition, representing 9% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Florida, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	120	31	25.8%	12	10.0%	43	35.8%	77	64.2%
Senate	20	5	25.0%	0	0.0%	5	25.0%	15	75.0%
Total	140	36	25.7%	12	8.6%	48	34.3%	92	65.7%

2010-2018

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

Major party competition in state legislative elections in Florida, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	143	29	20.3%	43	30.1%	72	50.3%	71	49.7%
2012	160	26	16.3%	62	38.8%	88	55.0%	72	45.0%
2014	140	30	21.4%	53	37.9%	83	59.3%	57	40.7%
2016	160	37	23.1%	50	31.3%	87	54.4%	73	45.6%
2018	140	36	25.7%	12	8.6%	48	34.3%	92	65.7%

See also:

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

Georgia

There were 236 seats up for election in Georgia, 91 (39%) of which were contested by both major parties. The remaining 145 seats (61%) had no major party competition.

• Democrats ran for 158 seats (67%), 67 of which had no Republican competition, representing 28% of all seats up for election.
• Republicans ran for 169 seats (72%), 78 of which had no Democratic competition, representing 33% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Georgia, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	180	52	28.9%	60	33.3%	112	62.2%	68	37.8%
Senate	56	15	26.8%	18	32.1%	33	58.9%	23	41.1%
Total	236	67	28.4%	78	33.1%	145	61.4%	91	38.6%

2010-2018

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

Major party competition in state legislative elections in Georgia, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	236	74	31.4%	84	35.6%	158	66.9%	78	33.1%
2012	236	63	26.7%	119	50.4%	182	77.1%	54	22.9%
2014	236	67	28.4%	120	50.8%	188	79.7%	48	20.3%
2016	236	65	27.5%	127	53.8%	192	81.4%	44	18.6%
2018	236	67	28.4%	78	33.1%	145	61.4%	91	38.6%

See also:

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

Hawaii

There were 63 seats up for election in Hawaii, 20 (32%) of which were contested by both major parties. The remaining 43 seats (68%) had no major party competition.

• Democrats ran for 61 seats (97%), 41 of which had no Republican competition, representing 65% of all seats up for election. This guaranteed Democratic control of a majority of seats up for election.
• Republicans ran for 22 seats (35%), two of which had no Democratic competition, representing 3% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Hawaii, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	51	33	64.7%	2	3.9%	35	68.6%	16	31.4%
Senate	12	8	66.7%	0	0.0%	8	66.7%	4	33.3%
Total	63	41	65.1%	2	3.2%	43	68.3%	20	31.7%

2010-2018

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

Major party competition in state legislative elections in Hawaii, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	66	3	4.5%	3	4.5%	6	9.1%	60	90.9%
2012	76	27	35.5%	2	2.6%	29	38.2%	47	61.8%
2014	63	20	31.7%	0	0.0%	20	31.7%	43	68.3%
2016	64	31	48.4%	2	3.1%	33	51.6%	31	48.4%
2018	63	41	65.1%	2	3.2%	43	68.3%	20	31.7%

See also:

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

Idaho

There were 105 seats up for election in Idaho, 57 (54%) of which were contested by both major parties. The remaining 48 seats (46%) had no major party competition.

• Democrats ran for 60 seats (57%), three of which had no Republican competition, representing 3% of all seats up for election.
• Republicans ran for 102 seats (97%), 45 of which had no Democratic competition, representing 43% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Idaho, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	70	2	2.9%	31	44.3%	33	47.1%	37	52.9%
Senate	35	1	2.9%	14	40.0%	15	42.9%	20	57.1%
Total	105	3	2.9%	45	42.9%	48	45.7%	57	54.3%

2010-2018

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

Major party competition in state legislative elections in Idaho, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	105	3	2.9%	48	45.7%	51	48.6%	54	51.4%
2012	105	1	1.0%	26	24.8%	27	25.7%	78	74.3%
2014	105	4	3.8%	46	43.8%	50	47.6%	55	52.4%
2016	105	6	5.7%	37	35.2%	43	41.0%	62	59.0%
2018	105	3	2.9%	45	42.9%	48	45.7%	57	54.3%

See also:

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

Illinois

There were 157 seats up for election in Illinois, 77 (49%) of which were contested by both major parties. The remaining 80 seats (51%) had no major party competition.

• Democrats ran for 134 seats (85%), 57 of which had no Republican competition, representing 36% of all seats up for election.
• Republicans ran for 100 seats (64%), 23 of which had no Democratic competition, representing 15% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Illinois, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	118	42	35.6%	15	12.7%	57	48.3%	61	51.7%
Senate	39	15	38.5%	8	20.5%	23	59.0%	16	41.0%
Total	157	57	36.3%	23	14.6%	80	51.0%	77	49.0%

2010-2018

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

Major party competition in state legislative elections in Illinois, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	139	44	31.7%	15	10.8%	59	42.4%	80	57.6%
2012	177	58	32.8%	43	24.3%	101	57.1%	76	42.9%
2014	137	50	36.5%	34	24.8%	84	61.3%	53	38.7%
2016	158	64	40.5%	35	22.2%	99	62.7%	59	37.3%
2018	157	57	36.3%	23	14.6%	80	51.0%	77	49.0%

See also:

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

Indiana

There were 125 seats up for election in Indiana, 86 (69%) of which were contested by both major parties. The remaining 39 seats (31%) had no major party competition.

• Democrats ran for 108 seats (86%), 22 of which had no Republican competition, representing 18% of all seats up for election.
• Republicans ran for 103 seats (82%), 17 of which had no Democratic competition, representing 14% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Indiana, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	100	22	22.0%	11	11.0%	33	33.0%	67	67.0%
Senate	25	0	0.0%	6	24.0%	6	24.0%	19	76.0%
Total	125	22	17.6%	17	13.6%	39	31.2%	86	68.8%

2010-2018

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

Major party competition in state legislative elections in Indiana, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	125	6	4.8%	29	23.2%	35	28.0%	90	72.0%
2012	125	16	12.8%	26	20.8%	42	33.6%	83	66.4%
2014	125	20	16.0%	42	33.6%	62	49.6%	63	50.4%
2016	125	22	17.6%	23	18.4%	45	36.0%	80	64.0%
2018	125	22	17.6%	17	13.6%	39	31.2%	86	68.8%

See also:

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

Iowa

There were 125 seats up for election in Iowa, 89 (71%) of which were contested by both major parties. The remaining 36 seats (29%) had no major party competition.

• Democrats ran for 118 seats (94%), 29 of which had no Republican competition, representing 23% of all seats up for election.
• Republicans ran for 96 seats (77%), seven of which had no Democratic competition, representing 6% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Iowa, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	100	23	23.0%	5	5.0%	28	28.0%	72	72.0%
Senate	25	6	24.0%	2	8.0%	8	32.0%	17	68.0%
Total	125	29	23.2%	7	5.6%	36	28.8%	89	71.2%

2010-2018

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

Major party competition in state legislative elections in Iowa, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	125	13	10.4%	28	22.4%	41	32.8%	84	67.2%
2012	126	12	9.5%	23	18.3%	35	27.8%	91	72.2%
2014	125	35	28.0%	28	22.4%	63	50.4%	62	49.6%
2016	125	21	16.8%	19	15.2%	40	32.0%	85	68.0%
2018	125	29	23.2%	7	5.6%	36	28.8%	89	71.2%

See also:

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

Kansas

There were 125 seats up for election in Kansas, 61 (49%) of which were contested by both major parties. The remaining 64 seats (51%) had no major party competition.

• Democrats ran for 86 seats (69%), 25 of which had no Republican competition, representing 20% of all seats up for election.
• Republicans ran for 100 seats (80%), 39 of which had no Democratic competition, representing 31% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Kansas, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	125	25	20.0%	39	31.2%	64	51.2%	61	48.8%
Senate	Did not hold elections.
Total	125	25	20.0%	39	31.2%	64	51.2%	61	48.8%

2010-2018

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

Major party competition in state legislative elections in Kansas, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	125	15	12.0%	39	31.2%	54	43.2%	71	56.8%
2012	165	6	3.6%	44	26.7%	50	30.3%	115	69.7%
2014	125	12	9.6%	38	30.4%	50	40.0%	75	60.0%
2016	165	23	13.9%	32	19.4%	55	33.3%	110	66.7%
2018	125	25	20.0%	39	31.2%	64	51.2%	61	48.8%

See also:

• Kansas House of Representatives elections, 2018

Kentucky

There were 119 seats up for election in Kentucky, 101 (85%) of which were contested by both major parties. The remaining 18 seats (15%) had no major party competition.

• Democrats ran for 109 seats (92%), eight of which had no Republican competition, representing 7% of all seats up for election.
• Republicans ran for 111 seats (93%), 10 of which had no Democratic competition, representing 8% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Kentucky, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	100	7	7.0%	8	8.0%	15	15.0%	85	85.0%
Senate	19	1	5.3%	2	10.5%	3	15.8%	16	84.2%
Total	119	8	6.7%	10	8.4%	18	15.1%	101	84.9%

2010-2018

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

Major party competition in state legislative elections in Kentucky, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	119	23	19.3%	29	24.4%	52	43.7%	67	56.3%
2012	119	34	28.6%	32	26.9%	66	55.5%	53	44.5%
2014	119	28	23.5%	32	26.9%	60	50.4%	59	49.6%
2016	119	17	14.3%	32	26.9%	49	41.2%	70	58.8%
2018	119	8	6.7%	10	8.4%	18	15.1%	101	84.9%

See also:

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

Maine

There were 186 seats up for election in Maine, 156 (84%) of which were contested by both major parties. The remaining 30 seats (16%) had no major party competition.

• Democrats ran for 174 seats (94%), 18 of which had no Republican competition, representing 10% of all seats up for election.
• Republicans ran for 168 seats (90%), 12 of which had no Democratic competition, representing 6% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Maine, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	151	15	9.9%	12	7.9%	27	17.9%	124	82.1%
Senate	35	3	8.6%	0	0.0%	3	8.6%	32	91.4%
Total	186	18	9.7%	12	6.5%	30	16.1%	156	83.9%

2010-2018

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

Major party competition in state legislative elections in Maine, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	186	5	2.7%	6	3.2%	11	5.9%	175	94.1%
2012	186	6	3.2%	11	5.9%	17	9.1%	169	90.9%
2014	186	11	5.9%	14	7.5%	25	13.4%	161	86.6%
2016	186	16	8.6%	10	5.4%	26	14.0%	160	86.0%
2018	186	18	9.7%	12	6.5%	30	16.1%	156	83.9%

See also:

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

Maryland

There were 188 seats up for election in Maryland, 117 (62%) of which were contested by both major parties. The remaining 71 seats (38%) had no major party competition.

• Democrats ran for 175 seats (93%), 58 of which had no Republican competition, representing 31% of all seats up for election.
• Republicans ran for 130 seats (69%), 13 of which had no Democratic competition, representing 7% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Maryland, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	141	46	32.6%	10	7.1%	56	39.7%	85	60.3%
Senate	47	12	25.5%	3	6.4%	15	31.9%	32	68.1%
Total	188	58	30.9%	13	6.9%	71	37.8%	117	62.2%

2010-2018

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

Major party competition in state legislative elections in Maryland, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	188	51	27.1%	8	4.3%	59	31.4%	129	68.6%
2012	Did not hold elections.
2014	188	60	31.9%	8	4.3%	68	36.2%	120	63.8%
2016	Did not hold elections.
2018	188	58	30.9%	13	6.9%	71	37.8%	117	62.2%

See also:

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

Massachusetts

There were 200 seats up for election in Massachusetts, 60 (30%) of which were contested by both major parties. The remaining 140 seats (70%) had no major party competition.

• Democrats ran for 186 seats (93%), 126 of which had no Republican competition, representing 63% of all seats up for election. This guaranteed Democratic control of a majority of seats up for election.
• Republicans ran for 74 seats (37%), 14 of which had no Democratic competition, representing 7% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Massachusetts, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	160	102	63.8%	12	7.5%	114	71.3%	46	28.8%
Senate	40	24	60.0%	2	5.0%	26	65.0%	14	35.0%
Total	200	126	63.0%	14	7.0%	140	70.0%	60	30.0%

2010-2018

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

Major party competition in state legislative elections in Massachusetts, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	200	92	46.0%	12	6.0%	104	52.0%	96	48.0%
2012	200	114	57.0%	20	10.0%	134	67.0%	66	33.0%
2014	200	105	52.5%	18	9.0%	123	61.5%	77	38.5%
2016	200	134	67.0%	20	10.0%	154	77.0%	46	23.0%
2018	200	126	63.0%	14	7.0%	140	70.0%	60	30.0%

See also:

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

Michigan

There were 148 seats up for election in Michigan, all of which were contested by both major parties.

In 2018

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

Major party competition in state legislative elections in Michigan, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	110	0	0.0%	0	0.0%	0	0.0%	110	100.0%
Senate	38	0	0.0%	0	0.0%	0	0.0%	38	100.0%
Total	148	0	0.0%	0	0.0%	0	0.0%	148	100.0%

2010-2018

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

Major party competition in state legislative elections in Michigan, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	148	0	0.0%	3	2.0%	3	2.0%	145	98.0%
2012	110	0	0.0%	2	1.8%	2	1.8%	108	98.2%
2014	148	0	0.0%	0	0.0%	0	0.0%	148	100.0%
2016	110	0	0.0%	0	0.0%	0	0.0%	110	100.0%
2018	148	0	0.0%	0	0.0%	0	0.0%	148	100.0%

See also:

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

Minnesota

There were 134 seats up for election in Minnesota, 131 (98%) of which were contested by both major parties. The remaining 3 seats (2%) had no major party competition.

• Democrats ran for 134 seats (100%), three of which had no Republican competition, representing 2% of all seats up for election.
• Republicans ran for 131 seats (98%), all of which featured Democratic competition.

In 2018

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

Major party competition in state legislative elections in Minnesota, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	134	3	2.2%	0	0.0%	3	2.2%	131	97.8%
Senate	Did not hold elections.
Total	134	3	2.2%	0	0.0%	3	2.2%	131	97.8%

2010-2018

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

Major party competition in state legislative elections in Minnesota, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	201	0	0.0%	6	3.0%	6	3.0%	195	97.0%
2012	201	6	3.0%	2	1.0%	8	4.0%	193	96.0%
2014	134	1	0.7%	8	6.0%	9	6.7%	125	93.3%
2016	201	5	2.5%	2	1.0%	7	3.5%	194	96.5%
2018	134	3	2.2%	0	0.0%	3	2.2%	131	97.8%

See also:

• Minnesota House of Representatives elections, 2018

Missouri

There were 180 seats up for election in Missouri, 133 (74%) of which were contested by both major parties. The remaining 47 seats (26%) had no major party competition.

• Democrats ran for 162 seats (90%), 29 of which had no Republican competition, representing 16% of all seats up for election.
• Republicans ran for 151 seats (84%), 18 of which had no Democratic competition, representing 10% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Missouri, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	163	28	17.2%	18	11.0%	46	28.2%	117	71.8%
Senate	17	1	5.9%	0	0.0%	1	5.9%	16	94.1%
Total	180	29	16.1%	18	10.0%	47	26.1%	133	73.9%

2010-2018

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

Major party competition in state legislative elections in Missouri, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	180	31	17.2%	47	26.1%	78	43.3%	102	56.7%
2012	180	33	18.3%	58	32.2%	91	50.6%	89	49.4%
2014	180	26	14.4%	65	36.1%	91	50.6%	89	49.4%
2016	180	35	19.4%	70	38.9%	105	58.3%	75	41.7%
2018	180	29	16.1%	18	10.0%	47	26.1%	133	73.9%

See also:

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

Montana

There were 125 seats up for election in Montana, 85 (68%) of which were contested by both major parties. The remaining 40 seats (32%) had no major party competition.

• Democrats ran for 106 seats (85%), 21 of which had no Republican competition, representing 17% of all seats up for election.
• Republicans ran for 104 seats (83%), 19 of which had no Democratic competition, representing 15% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Montana, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	100	19	19.0%	15	15.0%	34	34.0%	66	66.0%
Senate	25	2	8.0%	4	16.0%	6	24.0%	19	76.0%
Total	125	21	16.8%	19	15.2%	40	32.0%	85	68.0%

2010-2018

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

Major party competition in state legislative elections in Montana, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	126	11	8.7%	24	19.0%	35	27.8%	91	72.2%
2012	126	9	7.1%	17	13.5%	26	20.6%	100	79.4%
2014	125	19	15.2%	1	0.8%	20	16.0%	105	84.0%
2016	125	18	14.4%	10	8.0%	28	22.4%	97	77.6%
2018	125	21	16.8%	19	15.2%	40	32.0%	85	68.0%

See also:

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

Nebraska

There were 24 seats up for election in Nebraska, 13 (54%) of which were contested by both major parties. The remaining 11 seats (46%) had no major party competition.

• Democrats ran for 17 seats (71%), four of which had no Republican competition, representing 17% of all seats up for election.
• Republicans ran for 20 seats (83%), seven of which had no Democratic competition, representing 29% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Nebraska, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	N/A
Senate	24	4	16.7%	7	29.2%	11	45.8%	13	54.2%
Total	24	4	16.7%	7	29.2%	11	45.8%	13	54.2%

2010-2018

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

Major party competition in state legislative elections in Nebraska, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	24	3	12.5%	12	50.0%	15	62.5%	9	37.5%
2012	25	4	16.0%	8	32.0%	12	48.0%	13	52.0%
2014	24	2	8.3%	14	58.3%	16	66.7%	8	33.3%
2016	25	4	16.0%	10	40.0%	14	56.0%	11	44.0%
2018	24	4	16.7%	7	29.2%	11	45.8%	13	54.2%

See also:

• Nebraska State Senate elections, 2018

Nevada

There were 53 seats up for election in Nevada, 36 (68%) of which were contested by both major parties. The remaining 17 seats (32%) had no major party competition.

• Democrats ran for 48 seats (91%), 12 of which had no Republican competition, representing 23% of all seats up for election.
• Republicans ran for 41 seats (77%), five of which had no Democratic competition, representing 9% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Nevada, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	42	10	23.8%	5	11.9%	15	35.7%	27	64.3%
Senate	11	2	18.2%	0	0.0%	2	18.2%	9	81.8%
Total	53	12	22.6%	5	9.4%	17	32.1%	36	67.9%

2010-2018

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

Major party competition in state legislative elections in Nevada, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	53	1	1.9%	3	5.7%	4	7.5%	49	92.5%
2012	52	6	11.5%	6	11.5%	12	23.1%	40	76.9%
2014	53	10	18.9%	11	20.8%	21	39.6%	32	60.4%
2016	52	5	9.6%	8	15.4%	13	25.0%	39	75.0%
2018	53	12	22.6%	5	9.4%	17	32.1%	36	67.9%

See also:

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

New Hampshire

There were 424 seats up for election in New Hampshire, 351 (83%) of which were contested by both major parties. The remaining 73 seats (17%) had no major party competition.

• Democrats ran for 412 seats (97%), 61 of which had no Republican competition, representing 14% of all seats up for election.
• Republicans ran for 363 seats (86%), 12 of which had no Democratic competition, representing 3% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in New Hampshire, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	400	60	15.0%	12	3.0%	72	18.0%	328	82.0%
Senate	24	1	4.2%	0	0.0%	1	4.2%	23	95.8%
Total	424	61	14.4%	12	2.8%	73	17.2%	351	82.8%

2010-2018

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

Major party competition in state legislative elections in New Hampshire, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	424	23	5.4%	35	8.3%	58	13.7%	366	86.3%
2012	424	37	8.7%	38	9.0%	75	17.7%	349	82.3%
2014	424	41	9.7%	48	11.3%	89	21.0%	335	79.0%
2016	424	55	13.0%	32	7.5%	87	20.5%	337	79.5%
2018	424	61	14.4%	12	2.8%	73	17.2%	351	82.8%

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, 32 (46%) of which were contested by both major parties. The remaining 38 seats (54%) had no major party competition.

• Democrats ran for 57 seats (81%), 25 of which had no Republican competition, representing 36% of all seats up for election.
• Republicans ran for 45 seats (64%), 13 of which had no Democratic competition, representing 19% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in New Mexico, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	70	25	35.7%	13	18.6%	38	54.3%	32	45.7%
Senate	Did not hold elections.
Total	70	25	35.7%	13	18.6%	38	54.3%	32	45.7%

2010-2018

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

Major party competition in state legislative elections in New Mexico, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	70	20	28.6%	17	24.3%	37	52.9%	33	47.1%
2012	112	32	28.6%	26	23.2%	58	51.8%	54	48.2%
2014	70	22	31.4%	13	18.6%	35	50.0%	35	50.0%
2016	112	45	40.2%	25	22.3%	70	62.5%	42	37.5%
2018	70	25	35.7%	13	18.6%	38	54.3%	32	45.7%

See also:

• New Mexico House of Representatives elections, 2018

New York

There were 213 seats up for election in New York, 129 (61%) of which were contested by both major parties. The remaining 84 seats (39%) had no major party competition.

• Democrats ran for 194 seats (91%), 65 of which had no Republican competition, representing 31% of all seats up for election.
• Republicans ran for 148 seats (69%), 19 of which had no Democratic competition, representing 9% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in New York, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	150	49	32.7%	12	8.0%	61	40.7%	89	59.3%
Senate	63	16	25.4%	7	11.1%	23	36.5%	40	63.5%
Total	213	65	30.5%	19	8.9%	84	39.4%	129	60.6%

2010-2018

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

Major party competition in state legislative elections in New York, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	212	32	15.1%	16	7.5%	48	22.6%	164	77.4%
2012	213	58	27.2%	22	10.3%	80	37.6%	133	62.4%
2014	213	58	27.2%	32	15.0%	90	42.3%	123	57.7%
2016	213	65	30.5%	25	11.7%	90	42.3%	123	57.7%
2018	213	65	30.5%	19	8.9%	84	39.4%	129	60.6%

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, 167 (98%) of which were contested by both major parties. The remaining 3 seats (2%) had no major party competition.

• Democrats ran for 169 seats (99%), two of which had no Republican competition, representing 1% of all seats up for election.
• Republicans ran for 168 seats (99%), one of which had no Democratic competition, representing 1% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in North Carolina, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	120	2	1.7%	1	0.8%	3	2.5%	117	97.5%
Senate	50	0	0.0%	0	0.0%	0	0.0%	50	100.0%
Total	170	2	1.2%	1	0.6%	3	1.8%	167	98.2%

2010-2018

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

Major party competition in state legislative elections in North Carolina, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	170	14	8.2%	42	24.7%	56	32.9%	114	67.1%
2012	170	34	20.0%	39	22.9%	73	42.9%	97	57.1%
2014	170	36	21.2%	45	26.5%	81	47.6%	89	52.4%
2016	170	37	21.8%	41	24.1%	78	45.9%	92	54.1%
2018	170	2	1.2%	1	0.6%	3	1.8%	167	98.2%

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, 55 (76%) of which were contested by both major parties. The remaining 17 seats (24%) had no major party competition.

• Democrats ran for 58 seats (81%), three of which had no Republican competition, representing 4% of all seats up for election.
• Republicans ran for 69 seats (96%), 14 of which had no Democratic competition, representing 19% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in North Dakota, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	48	2	4.2%	11	22.9%	13	27.1%	35	72.9%
Senate	24	1	4.2%	3	12.5%	4	16.7%	20	83.3%
Total	72	3	4.2%	14	19.4%	17	23.6%	55	76.4%

2010-2018

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

Major party competition in state legislative elections in North Dakota, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	72	3	4.2%	17	23.6%	20	27.8%	52	72.2%
2012	75	5	6.7%	8	10.7%	13	17.3%	62	82.7%
2014	72	6	8.3%	18	25.0%	24	33.3%	48	66.7%
2016	69	1	1.4%	6	8.7%	7	10.1%	62	89.9%
2018	72	3	4.2%	14	19.4%	17	23.6%	55	76.4%

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, 105 (91%) of which were contested by both major parties. The remaining 11 seats (9%) had no major party competition.

• Democrats ran for 116 seats (100%), 11 of which had no Republican competition, representing 9% of all seats up for election.
• Republicans ran for 105 seats (91%), all of which featured Democratic competition.

In 2018

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

Major party competition in state legislative elections in Ohio, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	99	11	11.1%	0	0.0%	11	11.1%	88	88.9%
Senate	17	0	0.0%	0	0.0%	0	0.0%	17	100.0%
Total	116	11	9.5%	0	0.0%	11	9.5%	105	90.5%

2010-2018

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

Major party competition in state legislative elections in Ohio, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	116	9	7.8%	8	6.9%	17	14.7%	99	85.3%
2012	117	9	7.7%	8	6.8%	17	14.5%	100	85.5%
2014	116	7	6.0%	15	12.9%	22	19.0%	94	81.0%
2016	115	8	7.0%	22	19.1%	30	26.1%	85	73.9%
2018	116	11	9.5%	0	0.0%	11	9.5%	105	90.5%

See also:

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

Oklahoma

There were 125 seats up for election in Oklahoma, 91 (73%) of which were contested by both major parties. The remaining 34 seats (27%) had no major party competition.

• Democrats ran for 106 seats (85%), 15 of which had no Republican competition, representing 12% of all seats up for election.
• Republicans ran for 110 seats (88%), 19 of which had no Democratic competition, representing 15% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Oklahoma, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	101	12	11.9%	16	15.8%	28	27.7%	73	72.3%
Senate	24	3	12.5%	3	12.5%	6	25.0%	18	75.0%
Total	125	15	12.0%	19	15.2%	34	27.2%	91	72.8%

2010-2018

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

Major party competition in state legislative elections in Oklahoma, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	125	22	17.6%	49	39.2%	71	56.8%	54	43.2%
2012	125	21	16.8%	60	48.0%	81	64.8%	44	35.2%
2014	125	21	16.8%	58	46.4%	79	63.2%	46	36.8%
2016	125	11	8.8%	27	21.6%	38	30.4%	87	69.6%
2018	125	15	12.0%	19	15.2%	34	27.2%	91	72.8%

See also:

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

Oregon

There were 73 seats up for election in Oregon, 48 (66%) of which were contested by both major parties. The remaining 25 seats (34%) had no major party competition.

• Democrats ran for 68 seats (93%), 20 of which had no Republican competition, representing 27% of all seats up for election.
• Republicans ran for 53 seats (73%), five of which had no Democratic competition, representing 7% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Oregon, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	58	16	27.6%	5	8.6%	21	36.2%	37	63.8%
Senate	15	4	26.7%	0	0.0%	4	26.7%	11	73.3%
Total	73	20	27.4%	5	6.8%	25	34.2%	48	65.8%

2010-2018

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

Major party competition in state legislative elections in Oregon, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	76	3	3.9%	4	5.3%	7	9.2%	69	90.8%
2012	76	5	6.6%	11	14.5%	16	21.1%	60	78.9%
2014	75	17	22.7%	10	13.3%	27	36.0%	48	64.0%
2016	75	18	24.0%	13	17.3%	31	41.3%	44	58.7%
2018	73	20	27.4%	5	6.8%	25	34.2%	48	65.8%

See also:

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

Pennsylvania

There were 228 seats up for election in Pennsylvania, 139 (61%) of which were contested by both major parties. The remaining 89 seats (39%) had no major party competition.

• Democrats ran for 200 seats (88%), 61 of which had no Republican competition, representing 27% of all seats up for election.
• Republicans ran for 167 seats (73%), 28 of which had no Democratic competition, representing 12% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Pennsylvania, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	203	56	27.6%	27	13.3%	83	40.9%	120	59.1%
Senate	25	5	20.0%	1	4.0%	6	24.0%	19	76.0%
Total	228	61	26.8%	28	12.3%	89	39.0%	139	61.0%

2010-2018

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

Major party competition in state legislative elections in Pennsylvania, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	228	43	18.9%	50	21.9%	93	40.8%	135	59.2%
2012	228	53	23.2%	57	25.0%	110	48.2%	118	51.8%
2014	228	62	27.2%	65	28.5%	127	55.7%	101	44.3%
2016	228	53	23.2%	58	25.4%	111	48.7%	117	51.3%
2018	228	61	26.8%	28	12.3%	89	39.0%	139	61.0%

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, 43 (38%) of which were contested by both major parties. The remaining 70 seats (62%) had no major party competition.

• Democrats ran for 109 seats (96%), 66 of which had no Republican competition, representing 58% of all seats up for election. This guaranteed Democratic control of a majority of seats up for election.
• Republicans ran for 47 seats (42%), four of which had no Democratic competition, representing 4% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Rhode Island, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	75	48	64.0%	3	4.0%	51	68.0%	24	32.0%
Senate	38	18	47.4%	1	2.6%	19	50.0%	19	50.0%
Total	113	66	58.4%	4	3.5%	70	61.9%	43	38.1%

2010-2018

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

Major party competition in state legislative elections in Rhode Island, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	113	38	33.6%	4	3.5%	42	37.2%	71	62.8%
2012	113	61	54.0%	4	3.5%	65	57.5%	48	42.5%
2014	113	79	69.9%	4	3.5%	83	73.5%	30	26.5%
2016	113	74	65.5%	4	3.5%	79	69.9%	34	30.1%
2018	113	66	58.4%	4	3.5%	70	61.9%	43	38.1%

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, 45 (36%) of which were contested by both major parties. The remaining 79 seats (64%) had no major party competition.

• Democrats ran for 78 seats (63%), 33 of which had no Republican competition, representing 27% of all seats up for election.
• Republicans ran for 91 seats (73%), 46 of which had no Democratic competition, representing 37% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in South Carolina, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	124	33	26.6%	46	37.1%	79	63.7%	45	36.3%
Senate	Did not hold elections.
Total	124	33	26.6%	46	37.1%	79	63.7%	45	36.3%

2010-2018

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

Major party competition in state legislative elections in South Carolina, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	124	36	29.0%	51	41.1%	87	70.2%	37	29.8%
2012	170	19	11.2%	83	48.8%	102	60.0%	68	40.0%
2014	124	32	25.8%	62	50.0%	94	75.8%	30	24.2%
2016	170	45	26.5%	85	50.0%	130	76.5%	40	23.5%
2018	124	33	26.6%	46	37.1%	79	63.7%	45	36.3%

See also:

• South Carolina House of Representatives elections, 2018

South Dakota

There were 105 seats up for election in South Dakota, 89 (85%) of which were contested by both major parties. The remaining 16 seats (15%) had no major party competition.

• Democrats ran for 97 seats (92%), eight of which had no Republican competition, representing 8% of all seats up for election.
• Republicans ran for 97 seats (92%), eight of which had no Democratic competition, representing 8% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in South Dakota, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	70	6	8.6%	5	7.1%	11	15.7%	59	84.3%
Senate	35	2	5.7%	3	8.6%	5	14.3%	30	85.7%
Total	105	8	7.6%	8	7.6%	16	15.2%	89	84.8%

2010-2018

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

Major party competition in state legislative elections in South Dakota, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	105	14	13.3%	30	28.6%	44	41.9%	61	58.1%
2012	105	11	10.5%	31	29.5%	42	40.0%	63	60.0%
2014	105	15	14.3%	40	38.1%	55	52.4%	50	47.6%
2016	105	14	13.3%	25	23.8%	39	37.1%	66	62.9%
2018	105	8	7.6%	8	7.6%	16	15.2%	89	84.8%

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, 85 (73%) of which were contested by both major parties. The remaining 31 seats (27%) had no major party competition.

• Democrats ran for 105 seats (91%), 20 of which had no Republican competition, representing 17% of all seats up for election.
• Republicans ran for 96 seats (83%), 11 of which had no Democratic competition, representing 9% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Tennessee, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	99	17	17.2%	9	9.1%	26	26.3%	73	73.7%
Senate	17	3	17.6%	2	11.8%	5	29.4%	12	70.6%
Total	116	20	17.2%	11	9.5%	31	26.7%	85	73.3%

2010-2018

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

Major party competition in state legislative elections in Tennessee, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	116	17	14.7%	32	27.6%	49	42.2%	67	57.8%
2012	115	16	13.9%	41	35.7%	57	49.6%	58	50.4%
2014	116	17	14.7%	55	47.4%	72	62.1%	44	37.9%
2016	115	18	15.7%	41	35.7%	59	51.3%	56	48.7%
2018	116	20	17.2%	11	9.5%	31	26.7%	85	73.3%

See also:

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

Texas

There were 165 seats up for election in Texas, 107 (65%) of which were contested by both major parties. The remaining 58 seats (35%) had no major party competition.

• Democrats ran for 145 seats (88%), 38 of which had no Republican competition, representing 23% of all seats up for election.
• Republicans ran for 127 seats (77%), 20 of which had no Democratic competition, representing 12% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Texas, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	150	37	24.7%	18	12.0%	55	36.7%	95	63.3%
Senate	15	1	6.7%	2	13.3%	3	20.0%	12	80.0%
Total	165	38	23.0%	20	12.1%	58	35.2%	107	64.8%

2010-2018

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

Major party competition in state legislative elections in Texas, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	166	38	22.9%	63	38.0%	101	60.8%	65	39.2%
2012	181	38	21.0%	77	42.5%	115	63.5%	66	36.5%
2014	165	46	27.9%	64	38.8%	110	66.7%	55	33.3%
2016	166	44	26.5%	66	39.8%	110	66.3%	56	33.7%
2018	165	38	23.0%	20	12.1%	58	35.2%	107	64.8%

See also:

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

Utah

There were 89 seats up for election in Utah, 69 (78%) of which were contested by both major parties. The remaining 20 seats (22%) had no major party competition.

• Democrats ran for 71 seats (80%), two of which had no Republican competition, representing 2% of all seats up for election.
• Republicans ran for 87 seats (98%), 18 of which had no Democratic competition, representing 20% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Utah, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	75	2	2.7%	15	20.0%	17	22.7%	58	77.3%
Senate	14	0	0.0%	3	21.4%	3	21.4%	11	78.6%
Total	89	2	2.2%	18	20.2%	20	22.5%	69	77.5%

2010-2018

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

Major party competition in state legislative elections in Utah, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	90	1	1.1%	18	20.0%	19	21.1%	71	78.9%
2012	91	1	1.1%	20	22.0%	21	23.1%	70	76.9%
2014	89	4	4.5%	16	18.0%	20	22.5%	69	77.5%
2016	90	6	6.7%	28	31.1%	34	37.8%	56	62.2%
2018	89	2	2.2%	18	20.2%	20	22.5%	69	77.5%

See also:

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

Vermont

There were 180 seats up for election in Vermont, 69 (38%) of which were contested by both major parties. The remaining 111 seats (62%) had no major party competition.

• Democrats ran for 150 seats (83%), 81 of which had no Republican competition, representing 45% of all seats up for election.
• Republicans ran for 96 seats (53%), 27 of which had no Democratic competition, representing 15% of all seats up for election.
• There were three seats uncontested by both major parties, guaranteeing those seats to minor party or independent candidates.

In 2018

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

Major party competition in state legislative elections in Vermont, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	150	68	45.3%	25	16.7%	96	64.0%	54	36.0%
Senate	30	13	43.3%	2	6.7%	15	50.0%	15	50.0%
Total	180	81	45.0%	27	15.0%	111	61.7%	69	38.3%

2010-2018

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

Major party competition in state legislative elections in Vermont, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	180	54	30.0%	26	14.4%	80	44.4%	100	55.6%
2012	180	84	46.7%	33	18.3%	120	66.7%	60	33.3%
2014	180	81	45.0%	28	15.6%	112	62.2%	68	37.8%
2016	180	65	36.1%	28	15.6%	95	52.8%	85	47.2%
2018	180	81	45.0%	27	15.0%	111	61.7%	69	38.3%

See also:

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

Washington

There were 123 seats up for election in Washington, 90 (73%) of which were contested by both major parties. The remaining 33 seats (27%) had no major party competition.

• Democrats ran for 120 seats (98%), 30 of which had no Republican competition, representing 24% of all seats up for election.
• Republicans ran for 93 seats (76%), three of which had no Democratic competition, representing 2% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Washington, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	98	22	22.4%	2	2.0%	24	24.5%	74	75.5%
Senate	25	8	32.0%	1	4.0%	9	36.0%	16	64.0%
Total	123	30	24.4%	3	2.4%	33	26.8%	90	73.2%

2010-2018

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

Major party competition in state legislative elections in Washington, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	123	18	14.6%	25	20.3%	43	35.0%	80	65.0%
2012	124	24	19.4%	21	16.9%	45	36.3%	79	63.7%
2014	123	23	18.7%	22	17.9%	45	36.6%	78	63.4%
2016	124	33	26.6%	29	23.4%	62	50.0%	62	50.0%
2018	123	30	24.4%	3	2.4%	33	26.8%	90	73.2%

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, 102 (87%) of which were contested by both major parties. The remaining 15 seats (13%) had no major party competition.

• Democrats ran for 110 seats (94%), eight of which had no Republican competition, representing 7% of all seats up for election.
• Republicans ran for 109 seats (93%), seven of which had no Democratic competition, representing 6% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in West Virginia, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	100	8	8.0%	6	6.0%	14	14.0%	86	86.0%
Senate	17	0	0.0%	1	5.9%	1	5.9%	16	94.1%
Total	117	8	6.8%	7	6.0%	15	12.8%	102	87.2%

2010-2018

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

Major party competition in state legislative elections in West Virginia, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	117	31	26.5%	10	8.5%	41	35.0%	76	65.0%
2012	117	25	21.4%	15	12.8%	40	34.2%	77	65.8%
2014	117	3	2.6%	16	13.7%	19	16.2%	98	83.8%
2016	117	2	1.7%	7	6.0%	9	7.7%	108	92.3%
2018	117	8	6.8%	7	6.0%	15	12.8%	102	87.2%

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, 74 (64%) of which were contested by both major parties. The remaining 42 seats (36%) had no major party competition.

• Democrats ran for 106 seats (91%), 32 of which had no Republican competition, representing 28% of all seats up for election.
• Republicans ran for 84 seats (72%), 10 of which had no Democratic competition, representing 9% of all seats up for election.

In 2018

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

Major party competition in state legislative elections in Wisconsin, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	99	30	30.3%	8	8.1%	38	38.4%	61	61.6%
Senate	17	2	11.8%	2	11.8%	4	23.5%	13	76.5%
Total	116	32	27.6%	10	8.6%	42	36.2%	74	63.8%

2010-2018

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

Major party competition in state legislative elections in Wisconsin, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	116	14	12.1%	19	16.4%	33	28.4%	83	71.6%
2012	115	27	23.5%	6	5.2%	33	28.7%	82	71.3%
2014	116	26	22.4%	30	25.9%	56	48.3%	60	51.7%
2016	115	33	28.7%	24	20.9%	57	49.6%	58	50.4%
2018	116	32	27.6%	10	8.6%	42	36.2%	74	63.8%

See also:

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

Wyoming

There were 75 seats up for election in Wyoming, 26 (35%) of which were contested by both major parties. The remaining 49 seats (65%) had no major party competition.

• Democrats ran for 31 seats (41%), five of which had no Republican competition, representing 7% of all seats up for election.
• Republicans ran for 70 seats (93%), 44 of which had no Democratic competition, representing 59% of all seats up for election. This guaranteed Republican control of a majority of seats up for election.

In 2018

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

Major party competition in state legislative elections in Wyoming, 2018
Chamber	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
House	60	4	6.7%	36	60.0%	40	66.7%	20	33.3%
Senate	15	1	6.7%	8	53.3%	9	60.0%	6	40.0%
Total	75	5	6.7%	44	58.7%	49	65.3%	26	34.7%

2010-2018

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

Major party competition in state legislative elections in Wyoming, 2010-2018
Year	Seats
		Uncontested						Contested
		Only Democrats		Only Republicans		Total
		#	%	#	%	#	%	#	%
2010	75	7	9.3%	43	57.3%	50	66.7%	25	33.3%
2012	75	4	5.3%	51	68.0%	55	73.3%	20	26.7%
2014	75	5	6.7%	45	60.0%	50	66.7%	25	33.3%
2016	75	6	8.0%	14	18.7%	20	26.7%	55	73.3%
2018	75	5	6.7%	44	58.7%	49	65.3%	26	34.7%

See also:

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

Terms and definitions

Major party competition

Major party competition exists when candidates from both major parties—Democratic and Republican—appear on the general election ballot for a given seat.

A seat lacks major party competition when at least one major party does not have a candidate on the ballot, effectively guaranteeing the seat to the other major party. This includes cases where no candidates from either major party appear on the ballot, guaranteeing that seat to a minor party or independent candidate.

Seat

State legislative seats represent the total number of candidates who can be elected. These totals may differ from state legislative districts.

In most states, every state legislative district includes a single seat. These are referred to as single-member state legislative districts.

Certain states have multi-member state legislative districts, where a single district contains multiple seats.

Methodology

Counting major party competition

Major party competition is counted by seat.

In a single-member district, major party competition exists when one Democrat and one Republican appear on the general election ballot.

In multi-member districts, major party competition might exist for some seats while not existing for others.

For example, in a district with three seats, if three Democrats and two Republicans appear on the general election ballot, two seats have major party competition, while one does not. This is because the number of Republicans on the ballot is less than the number of seats up for election, meaning, at most, Republicans could win two of the three seats with the remaining seat effectively guaranteed to be won by a Democrat.

Major party competition is counted at the time of the general election. In states with top-two/four primaries, where every candidate appears on the same primary ballot regardless of political affiliation, this means only those candidates who advanced to the general election are counted. For example, if two Republicans and one Democrat ran in a top-two primary, and the two Republicans advanced to the general election, that seat is considered to have no major party competition since only one major party appears on the general election ballot.

Candidacy withdrawals

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

Candidates may choose to withdraw before the general election 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 general election ballot. If a major party candidate officially withdraws before the general election, the number of seats without major party competition increases unless another candidate replaces them.

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 a major party candidate unofficially withdraws before the general election, major party competition figures are unchanged.

Minor party and independent candidates

This analysis does not account for the presence of minor party and independent candidates on the general election ballot when determining major party competition.

For example, if a Republican candidate is on the general election ballot running against an independent candidate, that seat is not considered to have major party competition, since no Democratic candidates are present.

This is why seats contested by only one major party are referred to as guaranteed to the major party with a candidate on the ballot. While minor party and independent candidates can win state legislative elections, it is rare. Heading into the 2018 elections, minor party or independent legislators held 0.5% of the nation's 7,383 state legislative seats.

Major party write-in candidates

Most states allow voters to write in the name of some other candidate when casting a ballot. Write-in candidates affiliated with a major party are not accounted for when determining major party competition unless that write-in candidate wins the general election. In these instances, major party competition figures are updated retroactively.

Calculating the total number of seats contested by a party

While this analysis does not focus on the total number of seats each major party contested, those totals can be calculated using the information above.

• The total number of seats contested by Democrats is equal to the total number of seats with only Democrats on the ballot plus the number of seats contested by both major parties.
• The total number of seats contested by Republicans is equal to the total number of seats with only Republicans on the ballot plus the number of seats contested by both major parties.

See also

• 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
  • 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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