Call
the Map
2026 midtermsResults

2026 results · Colorado · county

Jefferson County, Colorado

Hickenlooper carried Jefferson County by 32.4 points in the Senate race, 12.9 points more Democratic than the 2024 presidential vote here (D+19.5). 8 races have votes counted here.

Votes counted, Senate
310,432
86% of the 361,504 votes for president in 2024
2026 margin
D+32.4
2024 president
D+19.5
Shift from 2024
12.9 pts → D
In Colorado
14th of 64
The 14th best county for Hickenlooper of the 64 counted; 13th for turnout against 2024.

Statewide races

  • Colorado SenateJohn Hickenlooper won · D+25.5 across the state
    63.6% John Hickenlooper31.2% Mark Baisley
    D+32.4310,432 votes
    12.9 pts → D2024 D+19.5
  • Colorado GovernorPhil Weiser won · D+27.9 across the state
    64.8% Phil Weiser28.9% Victor Marx
    D+35.9308,424 votes
    16.4 pts → D2024 D+19.5
  • Colorado Attorney GeneralJena Griswold won · D+18.1 across the state
    61.6% Jena Griswold38.4% Michael J. Allen
    D+23.3305,920 votes
    3.8 pts → D2024 D+19.5
  • Colorado Secretary of StateAmanda Gonzalez won · D+23.5 across the state
    63.7% Amanda Gonzalez33.2% James Wiley
    D+30.6306,542 votes
    11.1 pts → D2024 D+19.5
  • Colorado TreasurerJeff Bridges won · D+20.3 across the state
    61.7% Jeff Bridges35.5% Kevin Grantham
    D+26.2304,171 votes
    6.7 pts → D2024 D+19.5

The House

Jefferson County is split between 3 districts; each line is the county’s own part of that district.

  • Colorado 2nd DistrictJefferson County's part of the district · Joe Neguse won · D+51.3 across the district
    63.1% Joe Neguse34.5% Kelley Anne Dennison
    D+28.61,159 votes
    6.8 pts → D2024 D+21.8
  • Colorado 6th DistrictJefferson County's part of the district · Jason Crow won · D+34.6 across the district
    55.2% Jason Crow41.9% Jason Clark
    D+13.333,446 votes
    10.9 pts → D2024 D+2.4
  • Colorado 7th DistrictJefferson County's part of the district · Brittany Pettersen won · D+24.6 across the district
    63.9% Brittany Pettersen32.9% Tim Bennett
    D+30.9273,838 votes
    9.6 pts → D2024 D+21.3

Also in this county: CO-01, with no votes counted in this county's part. Counts come from each race’s official source, named on its own page. Margins are the leading two candidates’ difference in points of all votes counted. 2024 is the presidential vote, Harris against Trump, on the same ground (for a House district, the county’s part of it). A county is not compared with 2024 until a quarter of its 2024 vote is counted. Ranks are among the state’s counties with votes counted in the same race.