2026 United States Senate election in Colorado

For related races, see 2026 United States Senate elections.

The 2026 United States Senate election in Colorado will be held on November 3, 2026, to elect a member of the United States Senate to represent the state of Colorado. Incumbent Democratic senator John Hickenlooper, who was first elected in 2020, has stated that he plans to run for re-election. He has also said that this will be his last campaign for Senate.^[1]

2026 United States Senate election in Colorado

← 2020 November 3, 2026 2032 →

Party Democratic Republican

Incumbent U.S. senator John Hickenlooper Democratic

Democratic primary

Candidates

Declared

• Karen Breslin, college professor, candidate for U.S. Senate in 2022, and candidate for Colorado's 4th congressional district in 2024^[2]
• John Hickenlooper, incumbent U.S. Senator^[1]
• Nichole Miner, college student^[3][4]

Endorsements

John Hickenlooper

Organizations

• AIPAC^[5]

Fundraising

Campaign finance reports as of March 31, 2025
Candidate	Raised	Spent	Cash on hand
John Hickenlooper (D)	$3,240,769	$2,638,978	$2,243,874
Source: Federal Election Commission[6]

Republican primary

Candidates

Filed paperwork

• George Washington Markert^[7]

Independent candidates

Candidates

Filed paperwork

• Clinton Roosevelt Dale^[8]
• Joshua William Kuebler^[9]

General election

Predictions

Source	Ranking	As of
Inside Elections[10]	Solid D	Feb 20, 2025
The Cook Political Report[11]	Solid D	Feb 13, 2025
Sabato's Crystal Ball[12]	Safe D	Mar 12, 2025
Race To The WH[13]	Safe D	Apr 27, 2025

See also

• 2026 Colorado gubernatorial election