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

      Pennsylvania US Senate

      Winner
      DEM
      Joseph S. Clark
      50.1%2,268,641 votes
      Runner-up
      REP
      James H. Duff
      49.7%2,250,671 votes
      Margin
      D+0.4
      4,529,874 total votes
      3 candidates4,529,874 total votes
      CandidatePartyVotes ▼%Vote Share
      Joseph S. ClarkDEM✓
      		DEM2,268,64150.1%
      James H. DuffREP
      		REP2,250,67149.7%
      OtherOTH
      		OTH10,5620.2%

      Seat History

      US Senate in Pennsylvania(Class II)

      2024
      Dave McCormickREP
      R+0.2
      2022
      John FettermanDEM
      D+4.9
      2018
      Robert CaseyDEM
      D+13.1
      2016
      Patrick J ToomeyREP
      R+1.4
      2012
      Robert CaseyDEM
      D+9.1
      2010
      Patrick J ToomeyREP
      R+2.0
      2006
      Robert CaseyDEM
      D+17.4
      2004
      Arlen SpecterREP
      R+10.6
      2000
      Rick SantorumREP
      R+6.9
      1998
      Arlen SpecterREP
      R+26.6
      1994
      Rick SantorumREP
      R+2.5
      1992
      Arlen SpecterREP
      R+2.8
      1991(S)
      Harris WoffordDEM
      D+10.0
      1988
      John HeinzREP
      R+34.0
      1986
      Arlen SpecterREP
      R+13.6
      View all US Senate history for Pennsylvania →

      Candidates

      James H. DuffREP
      Record2W-1L
      Avg MarginR+7.0
      Career1946-1956
      US Senate / Governor
      Full profile →
      Joseph S. ClarkDEM
      Record2W-1L
      Avg MarginR+1.1
      Career1956-1968
      US Senate
      Full profile →

      Also in Pennsylvania, 1956

      President1 contest →
      ← All 1956 US Senate races1956 overviewPennsylvania profileAll elections