Akashic
1876–2024
Elections / 2018 · Senate · WI

The Democratic candidate won Wisconsin's Senate seat D+10.8.

Wisconsin, 2018. Candidate results and statewide totals below.

Wisconsin — 2018 Senate result
Source: MIT Election Data + Science Lab, 1976–2024 Senate returns (party-classified by literal ballot party).
Democratic (D)
1,472,914
55.4%
Republican (R)
1,184,885
44.6%
All others
0
0.0%
Margin
D+10.8
Candidates
Statewide candidate totals — MIT Election Data + Science Lab, 2018 Senate returns.
CandidatePartyVotesShare
Tammy BaldwinDDemocrat1,472,91455.4%
Leah VukmirRRepublican1,184,88544.6%
Wisconsin, 2018
DemocraticD+10.8
2018 presidential margin by county for Wisconsin — 2018 US Senate electionA map of the constituent counties of Wisconsin — 2018 US Senate election, each outlined and filled by its 2018 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), seated within the faint outlines of the surrounding states.MILWAUKEE, WI · D+43.0DANE, WI · D+55.4WAUKESHA, WI · R+23.6BROWN, WI · D+2.9RACINE, WI · D+4.8OUTAGAMIE, WI · D+0.3WINNEBAGO, WI · D+6.5WASHINGTON, WI · R+34.2ROCK, WI · D+25.5KENOSHA, WI · D+13.5MARATHON, WI · R+5.8LA CROSSE, WI · D+25.6SHEBOYGAN, WI · R+8.5OZAUKEE, WI · R+15.7EAU CLAIRE, WI · D+21.9WALWORTH, WI · R+10.1FOND DU LAC, WI · R+14.4ST. CROIX, WI · R+5.8JEFFERSON, WI · R+4.6DODGE, WI · R+14.6MANITOWOC, WI · R+6.4PORTAGE, WI · D+16.3WOOD, WI · R+2.8SAUK, WI · D+17.7CHIPPEWA, WI · R+0.1COLUMBIA, WI · D+13.2CALUMET, WI · R+8.8WAUPACA, WI · R+14.7ONEIDA, WI · R+4.0GRANT, WI · D+8.7DOUGLAS, WI · D+25.6POLK, WI · R+10.5BARRON, WI · R+7.2DUNN, WI · D+6.1SHAWANO, WI · R+16.9PIERCE, WI · D+5.5OCONTO, WI · R+19.2MARINETTE, WI · R+12.8GREEN, WI · D+20.9DOOR, WI · D+11.5MONROE, WI · R+2.4LINCOLN, WI · R+3.3VERNON, WI · D+15.7VILAS, WI · R+14.9TREMPEALEAU, WI · D+7.3CLARK, WI · R+12.7IOWA, WI · D+30.9WAUSHARA, WI · R+15.9JUNEAU, WI · R+7.6KEWAUNEE, WI · R+9.2ADAMS, WI · R+3.4LANGLADE, WI · R+14.8BAYFIELD, WI · D+26.3GREEN LAKE, WI · R+20.6SAWYER, WI · R+2.7TAYLOR, WI · R+24.6JACKSON, WI · D+9.5WASHBURN, WI · R+6.7BURNETT, WI · R+13.9MARQUETTE, WI · R+6.4RICHLAND, WI · D+14.6ASHLAND, WI · D+31.7PRICE, WI · R+5.7CRAWFORD, WI · D+17.5LAFAYETTE, WI · D+10.7RUSK, WI · R+12.0BUFFALO, WI · R+0.4FOREST, WI · R+4.6PEPIN, WI · R+1.6IRON, WI · R+4.8FLORENCE, WI · R+32.7MENOMINEE, WI · D+60.6
How it voted
Share of the 2018 vote
DemocraticDemocratic55.4%1,472,914
RepublicanRepublican44.6%1,184,885
OtherAll other candidates0.0%42
D+60
R+60
72 counties, each filled by 2018 D-vs-R margin. Hover any county for its result.
Wisconsin's Senate margins
Every contest in our store, 1976–2024
Wisconsin's Senate marginsDemocratic-minus-Republican presidential margin from 1976 to 2024. Most recent: +0.8% in 2024.flipped D · 2024+0.8%DR19762024
Wisconsin's Senate margins
YearMargin (D minus R)
1976+45.6%
1980−1.9%
1982+29.5%
1986−3.5%
1988+4.5%
1992+6.6%
1994+17.6%
1998+2.1%
2000+24.5%
2004+11.2%
2006+37.8%
2010−4.8%
2012+5.5%
2016−3.4%
2018+10.8%
2022−1.0%
2024+0.8%