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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/1980/US House/California/CA-18
      1980·US House·California·District profile →

      California District 18 US House

      Winner
      REP
      William M Thomas
      71.0%126,046 votes
      Runner-up
      DEM
      Mary \ Timmermans
      29.0%51,415 votes
      Margin
      R+42.0
      177,461 total votes
      2 candidates177,461 total votes
      CandidatePartyVotes ▼%Vote Share
      William M ThomasREP✓
      		REP126,04671.0%
      Mary \ TimmermansDEM
      		DEM51,41529.0%

      Presidential Vote by District

      5 elections · 2008–2024 · 118th Congress boundaries
      Latest (2024)D+29.5
      Shift vs 2020↓ R+14.6
      R+40R+20EvenD+20D+4020082012201620202024
      YearDem %Rep %MarginTurnout
      202463.2%33.7%D+29.5236,237
      202071.0%26.9%D+44.1267,951
      201671.5%22.7%D+48.8209,358
      201273.7%26.3%D+47.3182,131
      200871.5%28.0%D+43.5178,965

      Seat History

      US House in California

      2024
      Zoe LofgrenDEM
      D+29.3
      2022
      Zoe LofgrenDEM
      D+31.7
      Redistricted
      2020
      Anna G EshooDEM
      D+100.0
      2018
      Anna G EshooDEM
      D+49.0
      2016
      Anna G EshooDEM
      D+42.3
      2014
      Anna G EshooDEM
      D+35.5
      2012
      Anna G EshooDEM
      D+41.0
      Redistricted
      2010
      Dennis A CardozaDEM
      D+17.0
      2008
      Dennis A CardozaDEM
      D+100.0
      2006
      Dennis A CardozaDEM
      D+30.9
      2004
      Dennis A CardozaDEM
      D+35.0
      2002
      Dennis A CardozaDEM
      D+7.9
      Redistricted
      2000
      Gary A ConditDEM
      D+35.8
      1998
      Gary A ConditDEM
      D+86.8
      1996
      Gary A ConditDEM
      D+33.9
      View all US House history for California →

      Candidates

      William M ThomasREP
      Record16W-0L
      Avg MarginR+11.8
      Career1974-2004
      US House / State House
      Full profile →
      Mary \ TimmermansDEM
      Record0W-1L
      Avg Margin---
      Career1980-1980
      US House
      Full profile →

      Also in California, 1980

      President1 contest →US Senate1 contest →
      ← All 1980 US House races1980 overviewCalifornia profileAll elections