
In 2028
Colorado will hold a U.S. Senate election on November 7, 2028, to determine the representative for the term beginning in 2029.
The race centers on incumbent Michael Bennet (D), who is seeking re-election, while the 2026 Senate race involves John Hickenlooper (D) versus Mark Baisley (R).
Michael Bennet's current term ends January 3, 2029, making his seat the one up for election in 2028, whereas Hickenlooper's term ends in 2027.
senatemajority.comthegreenpapers.comBallotpediaThe outcome determines whether Colorado maintains its current all-Democratic U.S. Senate representation or if Republicans capture one of the state's two Senate seats.
Note: The market resolves based on the party of the Senator sworn in for the 2029 term, which corresponds to the winner of the 2028 general election for Michael Bennet's seat, not the 2026 election for Hickenlooper's seat.
Democratic incumbent John Hickenlooper secured the Democratic nomination for U.S. Senate by defeating state Sen. Julie Gonzales in the primary with 55% of the vote.
Wikipediacoloradonewsline.comRepublican state senator Mark Baisley advanced unopposed to the general election after receiving sufficient support from the Republican State Assembly in the primary.
WikipediaThree-term Democrat Michael Bennet has filed paperwork to run for re-election in the 2028 U.S. Senate election for Colorado.
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Michael Bennet won re-election in 2022 with 55.9% of the vote, demonstrating strong baseline support in Colorado.
WikipediaColorado has elected Democratic U.S. Senators consistently in recent decades, including Bennet (elected 2010, 2016, 2022) and Hickenlooper (elected 2020).
WikipediaBallotpediaBennet remains a three-term incumbent with established name recognition and a filed candidacy for the 2028 race, positioning him as the likely Democratic nominee.
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Michael Bennet previously ran as a candidate in the 2026 Colorado gubernatorial election and finished second, potentially draining energy or resources before returning to the Senate race.
WikipediaThe 2028 election includes 34 of 100 Senate seats up for regular election, creating a competitive national environment that could impact down-ballot outcomes.
BallotpediaIf Bennet faces a strong primary challenge or if the political climate shifts toward Republicans in 2028, the Democratic party could lose a seat it has held for over a decade.
WikipediaAI-generated briefing. AI can make mistakes. This is not financial advice.