Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado | 100% |
| Completed Match | 100% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Set 2 Winner | 100% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Total Sets: O/U 2.5 | 100% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Set 1 O/U 8.5 | 100% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Set 2 O/U 8.5 | 100% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Match O/U 21.5 | 100% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Match O/U 22.5 | 100% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Match O/U 23.5 | 100% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Set 1 Winner | 0% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Set 1 O/U 9.5 | 0% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Set 1 O/U 10.5 | 0% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Set 2 O/U 9.5 | 0% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Set 2 O/U 10.5 | 0% |
| Curitiba: Gonzalo Villanueva vs Juan Carlos Prado Set Handicap +/-1.5 | 0% |
Market context
Traders on decentralised prediction markets give 100% probability to curitiba: gonzalo villanueva vs juan carlos prado. This market refers to the tennis match between Gonzalo Villanueva and Juan Carlos Prado in the Curitiba, originally scheduled for September 28, 2026 at 9:00AM ET. This market will resolve to 'Gonzalo…
Methodology
Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Curitiba: Gonzalo Villanueva vs Juan Carlos Prado plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.
Resolution & payout
Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.
Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.
UK Frequently Asked Questions
- How accurate are political prediction markets?
- Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.
- What resolution source is used for elections?
- Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.
- Which platform has the deepest political liquidity?
- Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.
- Why do Polymarket and Kalshi differ on elections?
- Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.
- Are UK election prediction markets available from the UK?
- Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.
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