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      Home/Elections/2020/US Senate/South Dakota
      2020·US Senate·South Dakota

      South Dakota US Senate

      Winner
      REP
      Michael Rounds
      65.7%276,232 votes
      Runner-up
      DEM
      Dan Ahlers
      34.3%143,987 votes
      Margin
      R+31.5
      420,219 total votes
      2 candidates420,219 total votes
      CandidatePartyVotes ▼%Vote Share
      Michael RoundsREP✓
      		REP276,23265.7%
      Dan AhlersDEM
      		DEM143,98734.3%

      Seat History

      US Senate in South Dakota(Class I)

      2022
      John R ThuneREP
      R+43.5
      2016
      John R ThuneREP
      R+43.7
      2014
      Michael RoundsREP
      R+20.9
      2010
      John R ThuneREP
      R+100.0
      2008
      Timothy V JohnsonDEM
      D+25.0
      2004
      John R ThuneREP
      R+1.1
      2002
      Timothy V JohnsonDEM
      D+0.2
      1998
      Thomas A DaschleDEM
      D+25.7
      1996
      Timothy V JohnsonDEM
      D+2.6
      1992
      Thomas A DaschleDEM
      D+32.4
      1990
      Larry PresslerREP
      R+7.3
      1986
      Thomas A DaschleDEM
      D+3.2
      1984
      Larry PresslerREP
      R+49.0
      1980
      James AbdnorREP
      R+18.8
      View all US Senate history for South Dakota →

      Candidates

      Dan AhlersDEM
      Record3W-5L
      Avg MarginR+12.8
      Career2006-2022
      State House / US Senate / State Senate
      Full profile →
      Michael RoundsREP
      Record9W-0L
      Avg MarginR+30.8
      Career1990-2020
      US Senate / Governor / State Senate
      Full profile →

      Also in South Dakota, 2020

      President1 contest →US House1 contest →
      ← All 2020 US Senate races2020 overviewSouth Dakota profileAll elections