Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
95% | 5% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
95% | 5% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Nigel Farage | 95% |
| Person B | 50% |
| Person C | 50% |
| Person D | 50% |
| Person E | 50% |
| Person F | 50% |
| Person G | 50% |
| Person H | 50% |
| Person I | 50% |
| Person J | 50% |
| Person K | 50% |
| Person L | 50% |
| Person M | 50% |
| Person N | 50% |
| Person O | 50% |
| Person P | 50% |
| Person Q | 50% |
| Person R | 50% |
| Person S | 50% |
| Person T | 50% |
| Person U | 50% |
| Person V | 50% |
| Person W | 50% |
| Person X | 50% |
| Person Y | 50% |
| Person Z | 50% |
| Person AA | 50% |
| Person AB | 50% |
| Person AC | 50% |
| Person AD | 50% |
| Person AE | 50% |
| Person AF | 50% |
| Person AG | 50% |
| Person AH | 50% |
| Person AI | 50% |
| Person AJ | 50% |
| Person AK | 50% |
| Person AL | 50% |
| Person AM | 50% |
| Person AN | 50% |
| Person AO | 50% |
| Person AP | 50% |
| Person AQ | 50% |
| Person AR | 50% |
| Other | 50% |
| Count Binface | 5% |
| Giles Watling | 0% |
| Jovan Owusu-Nepaul | 0% |
| Matthew Bensilum | 0% |
| Natasha Osben | 0% |
| Tony Mack | 0% |
| Andrew Pemberton | 0% |
Market context
Market consensus: 95% chance of clacton by-election winner. Prediction markets aggregate real capital to produce this probability signal. A by-election for the United Kingdom parliamentary constituency of Clacton is expected to be held soon following the announced resignation of incumbent Nigel Farage. This market w…
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- 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 PolyGram. 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.
- 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.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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