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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/2010/US Senate/Wisconsin
      2010·US Senate·Wisconsin

      Wisconsin US Senate

      Winner
      REP
      Ronald B Johnson
      51.9%1,125,999 votes
      Runner-up
      DEM
      Russell D Feingold
      47.0%1,020,958 votes
      Margin
      R+4.8
      2,171,331 total votes
      3 candidates2,171,331 total votes
      CandidatePartyVotes ▼%Vote Share
      Ronald B JohnsonREP✓
      		REP1,125,99951.9%
      Russell D FeingoldDEM
      		DEM1,020,95847.0%
      OtherOTH
      		OTH24,3741.1%

      Seat History

      US Senate in Wisconsin(Class II)

      2024
      Tammy BaldwinDEM
      D+0.8
      2022
      Ronald B JohnsonREP
      R+1.0
      2018
      Tammy BaldwinDEM
      D+10.8
      2016
      Ronald B JohnsonREP
      R+3.4
      2012
      Tammy BaldwinDEM
      D+5.5
      2006
      Herb KohlDEM
      D+37.8
      2004
      Russell D FeingoldDEM
      D+11.2
      2000
      Herb KohlDEM
      D+24.5
      1998
      Russell D FeingoldDEM
      D+2.1
      1994
      Herb KohlDEM
      D+17.6
      1992
      Russell D FeingoldDEM
      D+6.6
      1988
      Herb KohlDEM
      D+4.5
      1986
      Bob KastenREP
      R+3.5
      1982
      William ProxmireDEM
      D+29.5
      View all US Senate history for Wisconsin →

      Candidates

      Ronald B JohnsonREP
      Record14W-4L
      Avg MarginD+13.3
      Career1978-2022
      US Senate / State House
      Full profile →
      Russell D FeingoldDEM
      Record6W-2L
      Avg MarginD+17.1
      Career1982-2016
      US Senate / State Senate
      Full profile →

      Also in Wisconsin, 2010

      US House8 contests →Governor1 contest →
      ← All 2010 US Senate races2010 overviewWisconsin profileAll elections