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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/2026/US Senate/Maine
      2026 ForecastLean D
      2026·US Senate·Maine

      Maine US Senate

      Incumbent
      RSusan Collins
      Senate Class 2

      Race Analysis

      Collins has performed incredibly well before, but despite blowing out polling in 2020, she looked far closer to human with a single digit loss. High variance here, but I'd rather be the Democrats.

      Updated 2026-02-18

      Candidates & Primaries

      Democratic Candidates

      TBDDDeclared

      Democratic challenger expected

      Democratic PrimaryPolymarket

      Will Jared Golden be the Democratic nominee for Senate in Maine?

      Data from Polymarket prediction markets

      Republican Candidates

      Susan CollinsRIncumbent

      Senior senator from Maine since 1997

      A5W-1L6 races
      Full profile →

      State Demographics

      Maine vs. National · Pop. 1.4M

      White (non-Hispanic)89.9%
      National: 57.4%
      Black1.8%
      National: 12.2%
      Hispanic/Latino2.2%
      National: 19.3%
      Asian1.2%
      National: 6.0%
      College Degree36.1%
      National: 35.6%
      Median Income$76,630
      National: $83,960
      Median Age44.8
      National: 39.1

      Seat History

      US Senate in Maine(Class II)

      2024
      Angus KingDEM
      D+17.3
      2020
      Susan CollinsREP
      R+9.0
      2018
      Angus KingDEM
      D+21.2
      2014
      Susan CollinsREP
      R+37.0
      2012
      Angus KingDEM
      D+25.5
      2008
      Susan CollinsREP
      R+22.8
      2006
      Olympia J SnoweREP
      R+53.4
      2002
      Susan CollinsREP
      R+16.9
      2000
      Olympia J SnoweREP
      R+37.9
      1996
      Susan CollinsREP
      R+5.3
      1994
      Olympia J SnoweREP
      R+23.9
      1990
      William S CohenREP
      R+22.7
      1988
      George MitchellDEM
      D+62.4
      1984
      William S CohenREP
      R+47.5
      1982
      George MitchellDEM
      D+21.7
      View all US Senate history for Maine →

      Also in Maine, 2026

      Governor
      Safe D
      ← 2026 Forecast Overview
      ← 2026 Forecast OverviewMaine profileAll elections