2018 Wisconsin Senate election

An election was held on November 6, 2018 to elect 17 of the 33 members of Wisconsin's State Senate. The election coincided with elections for other offices, including U.S. Senate, U.S. House of Representatives, Governor and State Assembly. The primary election was held on August 14, 2018.

2018 Wisconsin Senate election

← 2016 November 6, 2018 (2018-11-06) 2020 →
17 of the 33 seats in the Wisconsin State Senate 17 seats needed for a majority
Majority party Minority party   Leader Scott Fitzgerald Jennifer Shilling Party Republican Democratic Leader's seat 13th–Juneau 32nd–La Crosse Last election 9 seats, 48.6% 7 seats, 50.3% Seats before 18 15^[a] Seats won 11 6 Seats after 19 14 Seat change 1 1 Popular vote 675,016 605,142 Percentage 52.3% 46.9% Seats up 10 7
Results of the elections:      Republican hold      Republican gain      Democratic hold      No election
President before election Roger Roth Republican Elected President Roger Roth Republican

Republicans maintained control of the Senate, winning 11 seats compared to 6 seats for the Democrats.^[1]

Results

Statewide

Statewide results of the 2018 Wisconsin State Senate election:^[2]

Party		Candi- dates	Votes		Seats
			No.	%	No.	+/–	%
	Republican Party	15	675,016	52.31%	11	1	64.71%
	Democratic Party	15	605,142	46.90%	6	1	35.29%
	Independent	1	1,776	0.14%	0		0.00%
	Write-in	2	57	0.00%	0		0.00%
	Scattering		8,346	0.65%	0		0.00%
Total		33	1,290,337	100.00%	17		100.00%

Popular vote Republican   52.31% Democratic   46.90% Other   0.79%

House seats Republican   64.71% Democratic   35.29%

Close races

Seats where the margin of victory was under 10%:

1. State Senate district 25, 2.14%
2. State Senate district 5, 2.4%
3. State Senate district 31, 5.66%
4. State Senate district 19, 6.5%
5. State Senate district 17, 8.24%
6. State Senate district 1, 9.08% (gain)

District

Results of the 2018 Wisconsin State Senate election by district:^[2]

District	Democratic		Republican		Others		Total	Result^[b]
	Votes	%	Votes	%	Votes	%	Votes
District 1	39,414	45.42%	47,289	54.50%	65	0.07%	86,768	Republican Gain
District 3	36,875	97.40%	-	-	985	2.60%	37,860	Democratic Hold
District 5	45,591	48.75%	47,836	51.15%	102	0.11%	93,529	Republican Hold
District 7	56,198	66.25%	28,459	33.55%	165	0.19%	84,822	Democratic Hold
District 9	31,684	41.47%	44,680	58.47%	45	0.06%	76,409	Republican Hold
District 11	-	-	59,512	95.89%	2,554	4.11%	62,066	Republican Hold
District 13	34,385	40.90%	49,668	59.07%	24	0.03%	84,077	Republican Hold
District 15	54,381	96.53%	-	-	1,952	3.47%	56,333	Democratic Hold
District 17	31,757	45.86%	37,465	54.10%	26	0.04%	69,248	Republican Hold
District 19	38,179	46.73%	43,493	53.23%	29	0.04%	81,701	Republican Hold
District 21	35,111	41.91%	48,603	58.01%	69	0.08%	83,783	Republican Hold
District 23	29,637	40.82%	42,958	59.17%	11	0.02%	72,606	Republican Hold
District 25	39,624	51.06%	37,960	48.92%	20	0.03%	77,604	Democratic Hold
District 27	64,606	66.16%	32,993	33.79%	54	0.06%	97,653	Democratic Hold
District 29	27,627	35.73%	49,657	64.22%	41	0.05%	77,325	Republican Hold
District 31	40,073	51.67%	35,684	46.01%	1,804	2.33%	77,561	Democratic Hold
District 33	-	-	68,759	96.85%	2,233	3.15%	70,992	Republican Hold
Total	605,142	46.90%	675,016	52.31%	10,179	0.79%	1,290,337

Notes

1. Democrats gained two seats at 2018 special elections: District 10 in January 2018 and District 1 in June 2018.
2. Compared to the 2014 election.

References

1. Marley, Patrick; Beck, Molly (November 7, 2018). "Despite losses in statewide races, GOP strengthens hold on Wisconsin Senate". Milwaukee Journal Sentinel. Milwaukee, U.S.A. Retrieved December 6, 2018.
2. "Summary Results - 2018 General Election" (PDF). Madison, U.S.A.: Wisconsin Elections Commission. pp. 6–10. Retrieved December 3, 2018.