Akashic EdgeAKASHIC EDGE
ElectionsCandidates
HistorianCartographer2026 ForecastArticlesAPIPricing

Latest Articles

    View all articles →

    Browse by Category

      Data Tools

      • Elections
      • Candidates
      • The Historian
      • The Cartographer
      • American Nations
      • States & Counties
      • Congressional Districts

      About

      Akashic HQ provides deep political data analysis covering 165 years of U.S. elections.

      • Data Sources & Methodology
      • Pricing
      • API Documentation
      • Contact

      © 2026 Akashic HQ. All rights reserved.

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

      Louisiana US Senate

      Winner
      DEM
      J Bennett Johnston Jr.
      59.4%498,773 votes
      Runner-up
      OTH
      Other
      40.6%340,896 votes
      Margin
      D+59.4
      839,669 total votes
      2 candidates839,669 total votes
      CandidatePartyVotes ▼%Vote Share
      J Bennett Johnston Jr.DEM✓
      		DEM498,77359.4%
      OtherOTH
      		OTH340,89640.6%

      Seat History

      US Senate in Louisiana(Class I)

      2022
      John KennedyREP
      R+43.7
      2020
      Bil CassidyREP
      R+40.3
      2016
      John KennedyREP
      R+21.3
      2014
      William \ CassidyREP
      R+11.9
      2010
      David VitterREP
      R+18.9
      2008
      Mary LandrieuDEM
      D+6.4
      2004
      David VitterREP
      R+21.7
      2002
      Mary LandrieuDEM
      D+3.4
      1998
      John B BreauxDEM
      D+32.4
      1996
      Mary LandrieuDEM
      D+0.3
      1992
      John B BreauxDEM
      D+79.7
      1990
      J Bennett Johnston Jr.DEM
      D+95.5
      1986
      John B BreauxDEM
      D+5.6
      1984
      J Bennett Johnston Jr.DEM
      D+76.9
      1980
      Russell B. LongDEM
      D+57.5
      View all US Senate history for Louisiana →

      Candidates

      J Bennett Johnston Jr.DEM
      Record5W-0L
      Avg MarginD+66.2
      Career1968-1990
      US Senate / State Senate
      Full profile →

      Also in Louisiana, 1978

      US House8 contests →
      ← All 1978 US Senate races1978 overviewLouisiana profileAll elections