Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
76% | 24% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
76% | 24% | 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 |
|---|---|
| National Bank Open: Elina Svitolina vs Anastasia Potapova Match O/U 21.5 | 76% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova | 72% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set 1 Winner | 65% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set 2 Winner | 65% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Match O/U 22.5 | 65% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Match O/U 23.5 | 63% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set 2 O/U 8.5 | 51% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set 1 O/U 8.5 | 51% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set 2 O/U 9.5 | 51% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set 2 O/U 10.5 | 51% |
| Completed Match | 50% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set 1 O/U 9.5 | 50% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set 1 O/U 10.5 | 50% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set Handicap +/-1.5 | 47% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Total Sets: O/U 2.5 | 39% |
| National Bank Open: Elina Svitolina vs Anastasia Potapova Set Handicap +/-1.5 | 17% |
Market context
Elina Svitolina’s meeting with Anastasia Potapova in Toronto is the live reference point for this market, and the crowd’s 72% yes price is broadly consistent with Svitolina being the higher-ranked player and the more established hard-court performer. Svitolina leads the head-to-head 1-0, having beaten Potapova in straight sets on hard court in Monterrey in 2022, and that historical edge matters because it is the only previous sample between them.[1][3]
Comparable cases suggest the market is leaning more on current form than on upset upside. Svitolina’s last-52-weeks record is stronger than Potapova’s, at roughly 73% versus 60%, and she has also been described as defending deep points in Canada, which can matter for live expectations around consistency in this event.[1][7] That profile helps explain why models and odds have tended to make Svitolina the favourite, even though Potapova has shown enough recent match wins to keep the price from becoming one-sided.[4][17]
The main catalyst for traders is whether the scheduled Toronto round-three match is actually completed, because a walkover, cancellation or delay beyond the settlement window would push the market towards the special 50-50 outcome rather than a normal player decision.[6] Recent match listings have already shown the contest as upcoming, so the key dependency is the tournament’s updated schedule and any last-minute withdrawal or rescheduling news from the National Bank Open or WTA feed.[8][11]
Methodology
This page tracks National Bank Open: Elina Svitolina vs Anastasia Potapova across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.
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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