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/2010/US Senate/Colorado
      2010·US Senate·Colorado

      Colorado US Senate

      Winner
      DEM
      Michael Bennet
      48.1%854,685 votes
      Runner-up
      REP
      Ken Buck
      46.4%824,789 votes
      Margin
      D+1.7
      1,777,668 total votes
      3 candidates1,777,668 total votes
      CandidatePartyVotes ▼%Vote Share
      Michael BennetDEM✓
      		DEM854,68548.1%
      Ken BuckREP
      		REP824,78946.4%
      OtherOTH
      		OTH98,1945.5%

      Seat History

      US Senate in Colorado(Class I)

      2022
      Michael BennetDEM
      D+14.6
      2020
      John HickenlooperDEM
      D+2.4
      2016
      Michael BennetDEM
      D+5.7
      2014
      Cory GardnerREP
      R+1.9
      2008
      Mark Emery UdallDEM
      D+10.3
      2004
      Ken SalazarDEM
      D+4.8
      2002
      Wayne AllardREP
      R+4.9
      1998
      Ben Nighthorse CampbellREP
      R+27.5
      1996
      Wayne AllardREP
      R+5.0
      1992
      Ben Nighthorse CampbellDEM
      D+9.1
      1990
      Hank BrownREP
      R+14.0
      1986
      Timothy WirthDEM
      D+1.6
      1984
      William L ArmstrongREP
      R+29.6
      1980
      Gary HartDEM
      D+1.6
      View all US Senate history for Colorado →

      Candidates

      Ken BuckREP
      Record5W-1L
      Avg MarginD+1.7
      Career2010-2022
      US House / US Senate
      Full profile →
      Michael BennetDEM
      Record3W-0L
      Avg MarginD+3.7
      Career2010-2022
      US Senate
      Full profile →

      Also in Colorado, 2010

      US House7 contests →Governor1 contest →
      ← All 2010 US Senate races2010 overviewColorado profileAll elections