Colorado Governor Democratic Primary Winner

Platform comparison

Active sub-markets

Market context

The real-world event is the Democratic primary for Colorado’s governor, set for 30 June 2026, with incumbent Jared Polis term-limited and unable to run again. Two candidates, Michael Bennet and Phil Weiser, are contesting the nomination, and the market currently implies a 68% chance that Weiser wins the primary, including any potential run-off.

Historically, Colorado Democratic primaries for open gubernatorial seats have often favoured candidates with strong statewide organisational backing and prior executive experience. In 2018, when Polis first won, he leveraged a well-funded campaign and broad coalition support, while earlier open-seat contests saw similar patterns where the candidate with deeper party infrastructure prevailed. The current 68% probability aligns with Weiser’s role as former Attorney General and his alignment with the state Democratic Party, though Bennet’s national prominence and Senate record remain a credible counterweight, as seen in comparable 2020 and 2022 primary dynamics where incumbency or high-profile status shifted odds mid-cycle.

Traders should monitor candidate announcement schedules, fundraising disclosures, and any shifts in party caucus endorsements, as these are key catalysts. Recent polling from FiftyPlusOne shows Weiser holding a narrow lead, but Bennet’s campaign has intensified outreach in the final weeks before the primary [7]. Programmatic approaches to this market would involve conditional orders triggered by endorsement announcements or polling thresholds, with copy-trading bots tracking large position changes on platforms like Kalshi, where a separate market already prices Weiser’s nomination at a high probability [3]. The settlement window closes on 30 June 2026, so dependencies include the official Colorado Democratic Party results announcement and any credible consensus reporting that may override delays.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.