Incumbent Democrat John Hickenlooper secured the nomination in a competitive June 2026 primary and holds a commanding lead in the 2026 Colorado Senate race due to the state's consistent Democratic tilt, his established fundraising edge, and broad name recognition. Republican nominee Mark Baisley advanced unopposed but faces structural disadvantages in a state that has trended Democratic in recent federal contests. Trader consensus reflects these fundamentals, with the implied probability for a Democratic hold remaining elevated absent major shifts. Late developments such as unexpected national political realignments, candidate health events, or significant scandals could still narrow the margin before November voting concludes.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$47,997 Vol.
$47,997 Vol.

Democrat
96%

Republican
3%
$47,997 Vol.
$47,997 Vol.

Democrat
96%

Republican
3%
A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Market Opened: Oct 13, 2025, 5:35 PM ET
Resolver
0x2F5e3684c...A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Resolver
0x2F5e3684c...Incumbent Democrat John Hickenlooper secured the nomination in a competitive June 2026 primary and holds a commanding lead in the 2026 Colorado Senate race due to the state's consistent Democratic tilt, his established fundraising edge, and broad name recognition. Republican nominee Mark Baisley advanced unopposed but faces structural disadvantages in a state that has trended Democratic in recent federal contests. Trader consensus reflects these fundamentals, with the implied probability for a Democratic hold remaining elevated absent major shifts. Late developments such as unexpected national political realignments, candidate health events, or significant scandals could still narrow the margin before November voting concludes.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated


Beware of external links.
Beware of external links.
Frequently Asked Questions