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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/1966/US Senate/Massachusetts
      1966·US Senate·Massachusetts

      Massachusetts US Senate

      Winner
      REP
      Edward Brooke
      60.7%1,213,473 votes
      Runner-up
      DEM
      Endicott Peabody
      38.7%774,761 votes
      Margin
      R+21.9
      1,999,949 total votes
      3 candidates1,999,949 total votes
      CandidatePartyVotes ▼%Vote Share
      Edward BrookeREP✓
      		REP1,213,47360.7%
      Endicott PeabodyDEM
      		DEM774,76138.7%
      OtherOTH
      		OTH11,7150.6%

      Seat History

      US Senate in Massachusetts(Class II)

      2024
      Elizabeth WarrenDEM
      D+19.4
      2020
      Edward J MarkeyDEM
      D+33.1
      2018
      Elizabeth WarrenDEM
      D+24.2
      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

      Edward BrookeREP
      Record2W-1L
      Avg MarginR+13.5
      Career1966-1978
      US Senate
      Full profile →
      Endicott PeabodyDEM
      Record1W-4L
      Avg MarginR+19.0
      Career1962-1992
      State House / US Senate / Governor
      Full profile →

      Also in Massachusetts, 1966

      Governor1 contest →
      ← All 1966 US Senate races1966 overviewMassachusetts profileAll elections