Will Michael Bennet win the 2026 Colorado Governor Democratic primary election?

Prediction markets put the probability at 29%: Will Michael Bennet win the 2026 Colorado Governor Democratic primary election. Currently, markets see this as unlikely (29% YES). Phil Weiser leads Michael Bennet in new poll, with Colorado’s Democratic primary for governor coming down to undecided voters.

What’s Happening

A new poll commissioned by a group supporting Colorado Attorney General Phil Weiser shows him leading U.S. Senator Michael Bennet in the 2026 Colorado Governor Democratic primary election, with 45% of likely Democratic primary voters backing Weiser compared to 36% for Bennet. The survey, released on June 25, 2026, underscores a race that remains heavily dependent on undecided voters, who make up nearly a fifth of the electorate. The contest is the first open governor's race in Colorado in eight years, as term-limited Governor Jared Polis cannot seek reelection, creating a high-stakes showdown between two of the state's most prominent Democrats. [The Colorado Sun, Jun 25]

The primary, scheduled for June 30, 2026, has turned increasingly negative, with both candidates trading attacks in what local outlets describe as the most contentious Democratic primary in years. Bennet, who has served in the U.S. Senate since 2009, is leveraging his federal experience and name recognition, while Weiser emphasizes his record as attorney general and a more progressive platform. The Michael Bennet Colorado governor Democratic primary election has drawn national attention, as the outcome will likely determine the general election dynamics in a state that has trended blue but remains competitive in statewide races. Ballots are already in voters' hands, with early voting underway across the state. [Axios, Jun 24]

The winner of the Michael Bennet Colorado governor Democratic primary election will face the Republican nominee in the November 3, 2026 general election, with the GOP hoping to capitalize on any Democratic infighting. A key procedural milestone is the July 15, 2026 certification deadline for primary results, after which the general election campaign will formally begin. The race is also being watched for its impact on down-ballot contests, including the Democratic primary for attorney general and U.S. Senate, where incumbent John Hickenlooper faces a challenge from state Senator Julie Gonzales. With undecided voters likely to break late, the final days of the campaign will be critical for both Bennet and Weiser. [AP News, Jun 24]

Traded on Polymarket — $71K Volume

Lower-volume market on Polymarket ($71K). Wider spreads expected — enter with limit orders and be aware of slippage risk. Currently 29c YES.