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

      Massachusetts US Senate

      Winner
      DEM
      Elizabeth Warren
      60.3%1,633,371 votes
      Runner-up
      REP
      Geoff Diehl
      36.2%979,210 votes
      Margin
      D+24.2
      2,707,090 total votes
      3 candidates2,707,090 total votes
      CandidatePartyVotes ▼%Vote Share
      Elizabeth WarrenDEM✓
      		DEM1,633,37160.3%
      Geoff DiehlREP
      		REP979,21036.2%
      OtherOTH
      		OTH94,5093.5%

      Seat History

      US Senate in Massachusetts(Class II)

      2024
      Elizabeth WarrenDEM
      D+19.4
      2020
      Edward J MarkeyDEM
      D+33.1
      2014
      Edward J MarkeyDEM
      D+23.9
      2013(S)
      Edward J MarkeyDEM
      D+10.2
      2012
      Elizabeth WarrenDEM
      D+7.5
      2010(S)
      Scott BrownREP
      R+4.9
      2008
      John KerryDEM
      D+34.9
      2006
      Ted KennedyDEM
      D+38.8
      2002
      John KerryDEM
      D+80.0
      2000
      Ted KennedyDEM
      D+59.8
      1996
      John KerryDEM
      D+7.5
      1994
      Ted KennedyDEM
      D+17.1
      1990
      John KerryDEM
      D+14.2
      1988
      Ted KennedyDEM
      D+31.0
      View all US Senate history for Massachusetts →

      Candidates

      Elizabeth WarrenDEM
      Record3W-1L
      Avg MarginD+43.9
      Career2012-2024
      US Senate / State House
      Full profile →
      Geoff DiehlREP
      Record4W-2L
      Avg MarginD+36.5
      Career2010-2022
      Governor / US Senate / State House
      Full profile →

      Also in Massachusetts, 2018

      US House9 contests →Governor1 contest →
      ← All 2018 US Senate races2018 overviewMassachusetts profileAll elections