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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/1978/US Senate/Colorado
      1978·US Senate·Colorado

      Colorado US Senate

      Winner
      REP
      William L Armstrong
      58.7%480,596 votes
      Runner-up
      DEM
      Floyd K. Haskell
      40.3%330,247 votes
      Margin
      R+18.4
      819,150 total votes
      3 candidates819,150 total votes
      CandidatePartyVotes ▼%Vote Share
      William L ArmstrongREP✓
      		REP480,59658.7%
      Floyd K. HaskellDEM
      		DEM330,24740.3%
      OtherOTH
      		OTH8,3071.0%

      Seat History

      US Senate in Colorado(Class I)

      2022
      Michael BennetDEM
      D+14.6
      2020
      John HickenlooperDEM
      D+2.4
      2016
      Michael BennetDEM
      D+5.7
      2014
      Cory GardnerREP
      R+1.9
      2010
      Michael BennetDEM
      D+1.7
      2008
      Mark Emery UdallDEM
      D+10.3
      2004
      Ken SalazarDEM
      D+4.8
      2002
      Wayne AllardREP
      R+4.9
      1998
      Ben Nighthorse CampbellREP
      R+27.5
      1996
      Wayne AllardREP
      R+5.0
      1992
      Ben Nighthorse CampbellDEM
      D+9.1
      1990
      Hank BrownREP
      R+14.0
      1986
      Timothy WirthDEM
      D+1.6
      1984
      William L ArmstrongREP
      R+29.6
      1980
      Gary HartDEM
      D+1.6
      View all US Senate history for Colorado →

      Candidates

      Floyd K. HaskellDEM
      Record1W-1L
      Avg MarginR+8.7
      Career1972-1978
      US Senate
      Full profile →
      William L ArmstrongREP
      Record4W-0L
      Avg MarginR+26.3
      Career1968-1984
      US Senate / US House / State Senate
      Full profile →

      Also in Colorado, 1978

      US House5 contests →Governor1 contest →
      ← All 1978 US Senate races1978 overviewColorado profileAll elections