Wisconsin Governor Democratic Primary Margin of Victory

Platform comparison

Market context

Wisconsin's Democratic primary for governor takes place on 11 August 2026. The market tracks the percentage-point margin between the first- and second-place finishers, resolving based on the absolute difference in vote share. A 1% implied probability suggests traders expect a competitive race with a narrow victor rather than a dominant frontrunner.

Democratic primary margins in Wisconsin have historically ranged from single digits to double digits depending on field strength and incumbent status. In 2022, the gubernatorial general election saw Tony Evers win by approximately 3 percentage points in a competitive race against Tim Michels. Primary contests typically produce wider margins when an incumbent runs unopposed or when a clear establishment favourite emerges early, but Wisconsin's Democratic base has shown capacity for close contests when multiple credible candidates compete. The current 1% probability reflects expectations of a genuinely contested primary without a consensus nominee.

Key variables for programmatic tracking include candidate entry deadlines, campaign finance disclosures filed with the Wisconsin Elections Commission, and polling releases from recognised firms. Traders should monitor endorsement patterns from state Democratic leadership and union organisations, which historically signal consolidation around particular candidates. The Democratic National Committee's stance on the race and any federal candidate visits to Wisconsin in the months preceding August 2026 will indicate whether national party infrastructure backs a specific contender. Early voting and absentee ballot request patterns in July 2026 may provide leading indicators of turnout composition and candidate strength in specific regions.

Methodology

We track Wisconsin Governor Democratic Primary Margin of Victory across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

UK Frequently Asked Questions

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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.

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