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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/1956/US Senate/Iowa
      1956·US Senate·Iowa

      Iowa US Senate

      Winner
      REP
      Bourke Hickenlooper
      53.9%635,499 votes
      Runner-up
      DEM
      R.M. Evans
      46.1%543,156 votes
      Margin
      R+7.8
      1,178,655 total votes
      2 candidates1,178,655 total votes
      CandidatePartyVotes ▼%Vote Share
      Bourke HickenlooperREP✓
      		REP635,49953.9%
      R.M. EvansDEM
      		DEM543,15646.1%

      Seat History

      US Senate in Iowa(Class I)

      2022
      Charles E GrassleyREP
      R+12.2
      2020
      Joni K ErnstREP
      R+6.6
      2016
      Charles E GrassleyREP
      R+24.4
      2014
      Joni K ErnstREP
      R+8.3
      2010
      Charles E GrassleyREP
      R+31.1
      2008
      Tom HarkinDEM
      D+25.4
      2004
      Charles E GrassleyREP
      R+42.3
      2002
      Tom HarkinDEM
      D+10.4
      1998
      Charles E GrassleyREP
      R+37.9
      1996
      Tom HarkinDEM
      D+5.1
      1992
      Charles E GrassleyREP
      R+42.4
      1990
      Tom HarkinDEM
      D+9.1
      1986
      Charles E GrassleyREP
      R+32.5
      1984
      Tom HarkinDEM
      D+11.8
      1980
      Charles E GrassleyREP
      R+8.0
      View all US Senate history for Iowa →

      Candidates

      Bourke HickenlooperREP
      Record5W-0L
      Avg MarginR+10.7
      Career1942-1962
      US Senate / Governor
      Full profile →
      R.M. EvansDEM
      Record0W-1L
      Avg MarginR+7.8
      Career1956-1956
      US Senate
      Full profile →

      Also in Iowa, 1956

      President1 contest →Governor1 contest →
      ← All 1956 US Senate races1956 overviewIowa profileAll elections