Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
61% | 39% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
61% | 39% | 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 |
|---|---|
| Farage 80%+ | 61% |
| Farage 70–80% | 35% |
| Farage 60–70% | 4% |
| Farage 50–60% | 1% |
| Farage <40% | 0% |
| Farage 40–50% | 0% |
Market context
Nigel Farage announced his resignation as Member of Parliament for Clacton in early 2025, triggering a by-election in the Essex constituency he has represented since 2015. The seat has been held by Reform UK, the party Farage founded and led until stepping back from day-to-day leadership. The by-election must be held within three months of the vacancy being declared, with the settlement window extending to June 2027 to accommodate any potential delays or legal challenges to the result.
Clacton has voted decisively for Farage across multiple election cycles. In the 2024 general election, he secured 69.3% of the vote share, one of the strongest personal mandates in the constituency's recent history. By-elections in safe seats typically see reduced turnout and lower vote shares for the incumbent party's replacement candidate compared to the original MP, particularly when that MP has built a strong personal brand. The 0% implied probability suggests the market is pricing in either Farage's unexpected candidacy or a scenario where the by-election does not occur as scheduled.
Key developments to monitor include confirmation of the official by-election date from the Electoral Commission, announcement of Reform UK's replacement candidate, and any indication that Farage might reverse his resignation decision. Local media coverage and campaign activity in Clacton will signal the level of engagement from rival parties. The settlement depends on definitively reported results by the June 2027 deadline; any administrative delays or disputed outcomes would trigger resolution to the lowest bracket.
Methodology
Sports-specific comparison page for Clacton by-election: Nigel Farage Vote %. 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
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- 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.
- 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%.
Trade Clacton by-election: Nigel Farage Vote % on Sport Prediction
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