Wisconsin Governor Democratic Primary Margin of Victory (0.2% Brackets)

Platform comparison

Market context

Wisconsin's Democratic primary for governor takes place on 11 August 2026, with the margin between the top two finishers determining settlement. Polymarket currently prices this contract at 0%, reflecting either extreme confidence in a decisive outcome or minimal liquidity across the 0.2 percentage-point brackets. The conditional token structure on Polygon means traders are staking USDC against fractional probabilities for each bracket—a setup that rewards precision when primary fields narrow and frontrunners consolidate support in the final weeks before ballots open.

Historical Wisconsin Democratic primaries show variable compression patterns. The 2022 gubernatorial primary saw Tony Evers defeat Mandela Barnes by roughly 27 points in a two-candidate race, though that reflected an incumbent advantage. Earlier contested Democratic primaries in the state—including the 2018 gubernatorial primary where Evers won with 45% against a fragmented field—demonstrate that margins can swing sharply depending on candidate quality, turnout demographics, and late-breaking endorsements. A 0% crowd probability suggests traders expect either a runaway favourite or insufficient information to price granular bracket outcomes.

Key catalysts include candidate announcements and endorsement cascades from labour unions, which hold substantial sway in Wisconsin Democratic politics. The state's primary calendar sits relatively late in the cycle, giving traders visibility into national momentum and donor positioning. Recent Wisconsin political coverage should track whether an incumbent or clear frontrunner emerges by spring 2026, as late consolidation typically widens winning margins. Turnout models and early polling—if released—will be critical for traders assessing whether the field remains crowded or bifurcates into a two-person contest.

Methodology

We track Wisconsin Governor Democratic Primary Margin of Victory (0.2% Brackets) 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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

UK Frequently Asked Questions

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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.

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UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

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