Wisconsin Governor Democratic Primary Margin of Victory (Small 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 this market's outcome. The 0% implied probability reflects the absence of declared candidates or meaningful polling data at this stage. The settlement window closes at 23:59 UTC on 12 August, giving traders a narrow window post-election to assess final vote tallies.

Wisconsin Democratic gubernatorial primaries have historically produced competitive races when an incumbent is absent. The 2018 primary saw Tony Evers defeat Kelda Roth Waller by roughly 10 percentage points in a field of four candidates, whilst the 2014 race between Mary Burke and others showed tighter margins in earlier rounds. These precedents suggest that without a clear frontrunner or dominant fundraiser, primary margins can range from single digits to double digits depending on field size and candidate profile. The current zero probability likely reflects genuine uncertainty about whether a primary will be contested at all, given that Evers, the incumbent, may seek re-election.

Traders should monitor whether Evers announces his 2026 intentions before the filing deadline, typically in late spring 2026. Any declaration of candidacy or withdrawal would materially shift expectations about primary competitiveness. Local Wisconsin news outlets and Democratic Party announcements will signal emerging challengers and their viability. The absence of early polling or candidate declarations suggests this market remains highly speculative, with value potentially available once the field crystallises and campaign infrastructure becomes visible.

Methodology

We track Wisconsin Governor Democratic Primary Margin of Victory (Small 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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

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.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.