2018 Missouri elections

Last updated September 13, 2025

The 2018 Missouri elections were held on November 6, 2018.

United States Senate

This was one of the most hotly contested Senate elections in the entire country in 2018. Incumbent Democrat Claire McKaskil was holding onto her seat in a state Republican Donald Trump had won by a sizable margin in 2016.

Source	Ranking	As of
The Cook Political Report ^[1]	Tossup	October 26, 2018
CNN ^[2]	Tossup	November 5, 2018
RealClearPolitics ^[3]	Tossup	November 5, 2018
Daily Kos ^[4]	Tossup	November 5, 2018
Fox News ^[5]	Tossup	November 5, 2018
FiveThirtyEight ^[6]	Tossup	November 5, 2018

United States Senate election in Missouri, 2018^[7]
Party		Candidate	Votes	%	±%
	Republican	Josh Hawley	1,254,927	51.38%	+12.27
	Democratic	Claire McCaskill (incumbent)	1,112,935	45.57%	−9.24
	Independent	Craig O'Dear	34,398	1.41%	N/A
	Libertarian	Japheth Campbell	27,316	1.12%	−4.95
	Green	Jo Crain	12,706	0.52%	N/A
	Write-in		7	<0.01%	N/A
Total votes			2,442,289	100.00%	N/A
	Republican gain from Democratic

United States House of Representatives

Popular vote

Republican			55.03%
Democratic			42.51%
Other			2.46%

District	Republican		Democratic		Others		Total		Result

	Votes	%	Votes	%	Votes	%	Votes	%
District 1	45,867	16.72%	219,781	80.10%	8,727	3.18%	274,375	100.0%	Democratic hold
District 2	192,477	51.18%	177,611	47.23%	5,978	1.59%	376,066	100.0%	Republican hold
District 3	211,243	65.08%	106,589	32.84%	6,776	2.08%	324,608	100.0%	Republican hold
District 4	190,138	64.82%	95,968	32.72%	7,210	2.46%	293,316	100.0%	Republican hold
District 5	101,069	35.69%	175,019	61.53%	7,697	2.78%	283,785	100.0%	Democratic hold
District 6	199,796	65.42%	97,660	31.98%	7,953	2.60%	305,409	100.0%	Republican hold
District 7	196,343	66.23%	89,190	30.09%	10,922	3.68%	296,455	100.0%	Republican hold
District 8	194,042	73.39%	66,151	25.02%	4,206	1.59%	264,399	100.0%	Republican hold
Total	1,330,975	55.03%	1,027,969	42.51%	59,469	2.46%	2,418,413	100.0%

State auditor

2018 Missouri State Auditor election^[8]
Party		Candidate	Votes	%	±%
	Democratic	Nicole Galloway (incumbent)	1,209,881	50.41%	+50.41%
	Republican	Saundra McDowell	1,070,701	44.61%	−28.72%
	Libertarian	Sean O'Toole	51,304	2.14%	−17.58%
	Constitution	Jacob Luetkemeyer	50,951	2.12%	−4.84%
	Green	Don Fitz	17,106	0.72%	N/A
	Independent	Arnie C. AC Dienoff (write-in)	4	0.00%	N/A
Total votes			2,399,947	100.00%	N/A
	Democratic hold

State senate

District	Republican		Democratic		Others		Total		Result

	Votes	%	Votes	%	Votes	%	Votes	%
District 2	52,145	59.69%	35,219	40.31%	-	-	87,364	100.00%	Republican hold
District 4	16,773	22.96%	56,289	77.04%	-	-	73,062	100.00%	Democratic hold
District 6	52,861	73.22%	17,783	24.63%	1,548	2.15%	72,192	100.00%	Republican hold
District 8	41,094	54.69%	34,052	45.31%	-	-	75,146	100.00%	Republican hold
District 10	48,277	70.31%	20,384	29.69%	-	-	68,661	100.00%	Republican hold
District 12	49,947	72.50%	18,950	27.50%	-	-	68,897	100.00%	Republican hold
District 14	-	-	51,815	100.00%	-	-	51,815	100.00%	Democratic hold
District 16	41,985	70.18%	17,839	29.82%	-	-	59,824	100.00%	Republican hold
District 18	46,225	70.30%	19,528	29.70%	-	-	65,753	100.00%	Republican hold
District 20	62,247	73.88%	22,006	26.12%	-	-	84,253	100.00%	Republican hold
District 22	40,553	58.33%	26,896	38.68%	2,077	2.99%	69,526	100.00%	Republican hold
District 24	30,494	37.15%	49,910	60.80%	1,682	2.05%	82,086	100.00%	Democratic hold
District 26	53,143	64.02%	29,866	35.98%	-	-	83,009	100.00%	Republican hold
District 28	53,659	79.18%	14,113	20.82%	-	-	67,772	100.00%	Republican hold
District 30	34,506	53.35%	30,175	46.65%	-	-	64,681	100.00%	Republican hold
District 32	48,383	73.73%	15,125	23.05%	2,114	3.22%	65,622	100.00%	Republican hold
District 34	38,648	52.47%	35,015	47.53%	-	-	73,663	100.00%	Republican hold
Total	710,940	58.59%	494,965	40.79%	7,421	0.61%	1,213,326	100.00%

State House

References

↑ "2018 Senate Race Ratings". The Cook Political Report. Retrieved October 11, 2017.
↑ "Key Races: Senate" . Retrieved October 11, 2018.
↑ "Battle for the Senate 2018" . Retrieved October 11, 2018.
↑ "Daily Kos Elections 2018 race ratings". Daily Kos. Retrieved August 18, 2018.
↑ "2018 Senate Power Rankings" . Retrieved July 10, 2018.
↑ Silver, Nate (September 11, 2018). "Missouri - 2018 Senate Forecast". Archived from the original on October 11, 2018.
↑ "All Results State of Missouri - State of Missouri - General Election, November 06, 2018". sos.mo.gov.
↑ "State of Missouri - Election Night Results". enr.sos.mo.gov.

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[1] "2018 Senate Race Ratings". The Cook Political Report. Retrieved October 11, 2017.

[2] "Key Races: Senate" . Retrieved October 11, 2018.

[3] "Battle for the Senate 2018" . Retrieved October 11, 2018.

[4] "Daily Kos Elections 2018 race ratings". Daily Kos. Retrieved August 18, 2018.

[5] "2018 Senate Power Rankings" . Retrieved July 10, 2018.

[6] Silver, Nate (September 11, 2018). "Missouri - 2018 Senate Forecast". Archived from the original on October 11, 2018.

[7] "All Results State of Missouri - State of Missouri - General Election, November 06, 2018". sos.mo.gov.

[8] "State of Missouri - Election Night Results". enr.sos.mo.gov.

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