Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
91% | 9% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
91% | 9% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Francesca Hong | 91% |
| David Crowley | 9% |
| Mandela Barnes | 0% |
| Missy Hughes | 0% |
| Brett Hulsey | 0% |
| Sara Rodriguez | 0% |
| Zachary Roper | 0% |
| Kelda Roys | 0% |
| Tim Jacobson | 0% |
| Joel Brennan | 0% |
| Melissa Agard | 0% |
| Chris Larson | 0% |
| Tom Nelson | 0% |
| Candidate A | 0% |
| Candidate B | 0% |
| Candidate C | 0% |
| Candidate D | 0% |
| Candidate E | 0% |
| Candidate F | 0% |
| Candidate G | 0% |
| Candidate H | 0% |
| Candidate I | 0% |
| Candidate J | 0% |
| Candidate K | 0% |
| Candidate L | 0% |
| Candidate M | 0% |
| Candidate N | 0% |
| Candidate O | 0% |
| Other | 0% |
Market context
The Wisconsin Democratic primary for governor is in its final stretch, with the field having been whittled down to four active contenders: Francesca Hong, Joel Brennan, Kelda Roys and David Crowley, while other names have dropped out or suspended campaigns but may still appear on the ballot. That matters for a market sitting at 0% YES because the outcome is being shaped less by a settled front-runner than by ballot confusion, late withdrawals and whether a fragmented electorate coalesces behind one candidate at the end.[1][6][14]
Recent coverage frames this as a wide-open race rather than a coronation. PBS Wisconsin reported that Hong was the front-runner in one late-stage event, but also noted the primary remained competitive, while Ballotpedia summarised that Barnes, Crowley, Hong and Rodriguez had led in endorsements, polls and fundraising earlier in June before the field changed again.[1][4] Comparable cases in crowded Wisconsin primaries suggest that late momentum can matter more than early name recognition, especially when several candidates have similar ideological lanes and the vote is split across Milwaukee, Madison and other Democratic strongholds.[2][13]
For traders, the main catalysts are the remaining public signals before polling day: any final endorsements, debate spillover, candidate withdrawals, and reporting on which suspended candidates stay on the ballot. The Milwaukee Journal Sentinel noted that a televised Democratic debate was scheduled for 28 July, and it also reported that several candidates had dropped out or re-entered, underlining how unstable the field has been.[14][6] The key dependency is whether the Wisconsin Democratic Party’s official count confirms one candidate clearly ahead, or whether a late reset in turnout or consolidation produces a surprise winner.[1]
Methodology
Sports-specific comparison page for Wisconsin Governor Democratic Primary Winner. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- 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%.
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