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      Data: MIT Election Lab, VEST, Census Bureau
      Home/Elections/2026/US Senate/Idaho
      2026 ForecastSafe R
      2026·US Senate·Idaho

      Idaho US Senate

      Incumbent
      RJim Risch
      Senate Class 2

      Race Analysis

      Analysis coming soon.

      Updated 2026-02-18

      Candidates & Primaries

      Democratic Candidates

      TBDDRumored

      No major Dem challenger expected

      Republican Candidates

      Jim RischRIncumbent

      Senior senator from Idaho since 2009

      C3W-0L3 races
      Full profile →
      Republican PrimaryPolymarket

      Will Jim Risch be the Republican nominee for Senate in Idaho?

      Data from Polymarket prediction markets

      State Demographics

      Idaho vs. National · Pop. 1.9M

      White (non-Hispanic)78.6%
      National: 57.4%
      Black0.8%
      National: 12.2%
      Hispanic/Latino13.6%
      National: 19.3%
      Asian1.4%
      National: 6.0%
      College Degree31.8%
      National: 35.6%
      Median Income$78,309
      National: $83,960
      Median Age37.6
      National: 39.1

      Seat History

      US Senate in Idaho(Class I)

      2022
      Mike CrapoREP
      R+31.9
      2020
      Jim RischREP
      R+29.4
      2016
      Michael D CrapoREP
      R+38.4
      2014
      Jim RischREP
      R+30.7
      2010
      Michael D CrapoREP
      R+46.3
      2008
      Jim RischREP
      R+23.6
      2004
      Michael D CrapoREP
      R+99.2
      2002
      Larry E CraigREP
      R+32.6
      1998
      Michael D CrapoREP
      R+41.1
      1996
      Larry E CraigREP
      R+17.1
      1992
      Dirk KempthorneREP
      R+13.1
      1990
      Larry E CraigREP
      R+22.6
      1986
      Steven D SymmsREP
      R+3.1
      1984
      James A. McClureREP
      R+46.2
      1980
      Steven D SymmsREP
      R+1.0
      View all US Senate history for Idaho →

      Also in Idaho, 2026

      Governor
      Safe R      ← 2026 Forecast Overview
      ← 2026 Forecast OverviewIdaho profileAll elections