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/1966/US Senate/Michigan
      1966·US Senate·Michigan

      Michigan US Senate

      Winner
      REP
      Robert P. Griffin
      55.9%1,363,530 votes
      Runner-up
      DEM
      G. Mennen Williams
      43.8%1,069,484 votes
      Margin
      R+12.1
      2,439,365 total votes
      3 candidates2,439,365 total votes
      CandidatePartyVotes ▼%Vote Share
      Robert P. GriffinREP✓
      		REP1,363,53055.9%
      G. Mennen WilliamsDEM
      		DEM1,069,48443.8%
      OtherOTH
      		OTH6,3510.3%

      Seat History

      US Senate in Michigan(Class II)

      2024
      Elissa SlotkinDEM
      D+0.3
      2020
      Gary C PetersDEM
      D+1.7
      2018
      Debbie StabenowDEM
      D+6.5
      2014
      Gary C PetersDEM
      D+13.3
      2012
      Debbie StabenowDEM
      D+20.8
      2008
      Carl LevinDEM
      D+28.8
      2006
      Debbie StabenowDEM
      D+15.7
      2002
      Carl LevinDEM
      D+22.7
      2000
      Debbie StabenowDEM
      D+1.6
      1996
      Carl LevinDEM
      D+18.5
      1994
      Spencer AbrahamREP
      R+9.1
      1990
      Carl LevinDEM
      D+16.3
      1988
      Donald Riegle Jr.DEM
      D+21.9
      1984
      Carl LevinDEM
      D+4.6
      1982
      Donald Riegle Jr.DEM
      D+16.9
      View all US Senate history for Michigan →

      Candidates

      G. Mennen WilliamsDEM
      Record6W-1L
      Avg MarginD+3.4
      Career1948-1966
      US Senate / Governor
      Full profile →
      Robert P. GriffinREP
      Record2W-1L
      Avg MarginR+4.6
      Career1966-1978
      US Senate
      Full profile →

      Also in Michigan, 1966

      Governor1 contest →
      ← All 1966 US Senate races1966 overviewMichigan profileAll elections