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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/2018/US Senate/Delaware
      2018·US Senate·Delaware

      Delaware US Senate

      Winner
      DEM
      Thomas R Carper
      60.0%217,385 votes
      Runner-up
      REP
      Robert Arlett
      37.8%137,127 votes
      Margin
      D+22.1
      362,606 total votes
      3 candidates362,606 total votes
      CandidatePartyVotes ▼%Vote Share
      Thomas R CarperDEM✓
      		DEM217,38560.0%
      Robert ArlettREP
      		REP137,12737.8%
      OtherOTH
      		OTH8,0942.2%

      Seat History

      US Senate in Delaware(Class II)

      2024
      Lisa Blunt RochesterDEM
      D+17.1
      2020
      Chris CoonsDEM
      D+21.5
      2014
      Chris CoonsDEM
      D+13.6
      2012
      Thomas R CarperDEM
      D+37.5
      2010(S)
      Chris CoonsDEM
      D+16.6
      2008
      Joe BidenDEM
      D+29.4
      2006
      Thomas R CarperDEM
      D+39.7
      2002
      Joe BidenDEM
      D+17.4
      2000
      Thomas R CarperDEM
      D+11.8
      1996
      Joe BidenDEM
      D+21.9
      1994
      William R. Roth Jr.REP
      R+13.3
      1990
      Joe BidenDEM
      D+26.9
      1988
      William R. Roth Jr.REP
      R+24.1
      1984
      Joe BidenDEM
      D+20.2
      View all US Senate history for Delaware →

      Candidates

      Robert ArlettREP
      Record0W-1L
      Avg MarginD+22.1
      Career2018-2018
      US Senate
      Full profile →
      Thomas R CarperDEM
      Record11W-0L
      Avg MarginD+30.4
      Career1982-2018
      US Senate / Governor / US House
      Full profile →

      Also in Delaware, 2018

      US House1 contest →
      ← All 2018 US Senate races2018 overviewDelaware profileAll elections