
In 2026
The 2026 United States Senate election in Colorado will determine whether Democratic incumbent John Hickenlooper secures a second term or Republican Mark Baisley wins the seat.
The race features incumbent Democrat John Hickenlooper, who was first elected in 2020, against Republican state senator Mark Baisley.
Hickenlooper defeated a primary challenger in late June, while Baisley became the sole Republican nominee after no other contenders met the party assembly threshold.
WikipediaWikipediaA Hickenlooper victory maintains the Democratic hold on the seat in a state that voted 10.5 points for Harris in 2024, while a Baisley win would flip a solidly Democratic seat to Republicans.
uspollingdata.comWikipediaNote: The market resolves to "Yes" (John Hickenlooper) only if a Democratic representative is sworn in for the term beginning in 2027, which occurs after the November 3, 2026 election and the subsequent certification/swearing-in process.
Democratic incumbent John Hickenlooper won the Colorado Senate primary with 52.8% of the vote, defeating progressive challenger Julie Gonzales.
WikipediaRepublican state senator Mark Baisley advanced to the general election unopposed after being the only candidate to secure at least 30% support from the Republican State Assembly.
WikipediaThe general election for the U.S. Senate seat in Colorado is scheduled for November 3, 2026, with Colorado rated as a "Safe D" state by Senate analysts.
Wikipediauspollingdata.comGeneral election for the U.S. Senate in Colorado where voters will cast ballots for Hickenlooper or Baisley.
WikipediaAI-generated briefing. AI can make mistakes. This is not financial advice.
Colorado is rated "Safe D" by the Sabato Crystal Ball and "Solid D" by the Cook Political Report, reflecting a consistent 10.5-point Democratic advantage in recent statewide elections.
uspollingdata.comHickenlooper won the Democratic primary with 52.8% of the vote, demonstrating strong establishment support despite a late-May poll showing a surprisingly close race against Gonzales.
Wikipedia270towin.comNo strong Republican candidate entered the general race, with Baisley advancing unopposed due to a lack of competitors surpassing the 30% threshold at the Republican Assembly.
WikipediaAI-generated briefing. AI can make mistakes. This is not financial advice.
A late May 2026 poll showed Hickenlooper's lead over primary challenger Gonzales narrowed to just 7 points (41% to 34%), suggesting vulnerability within the Democratic base that could impact the general election.
270towin.comHickenlooper has explicitly stated this will be his last Senate campaign, which may reduce his personal fundraising intensity or campaign energy compared to a candidate seeking a third term.
uspollingdata.comWhile Colorado leans Democratic, the primary margin of 53% to 47% indicates a competitive intra-party dynamic that could leave parts of the progressive base less motivated to support the final incumbent nominee.
WikipediaAI-generated briefing. AI can make mistakes. This is not financial advice.