Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Election Predictions UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| O/U 3.5 | 100% |
| Both Teams to Score | 100% |
| CF Estrela da Amadora O/U 0.5 | 100% |
| CF Estrela da Amadora O/U 1.5 | 100% |
| Sporting CP O/U 0.5 | 100% |
| Sporting CP O/U 1.5 | 100% |
| Both Teams to Score in Second Half | 100% |
| 2nd Half O/U 0.5 | 100% |
| 2nd Half O/U 1.5 | 100% |
| 2nd Half O/U 2.5 | 100% |
| CF Estrela da Amadora 2nd Half O/U 0.5 | 100% |
| CF Estrela da Amadora 2nd Half O/U 1.5 | 100% |
| Sporting CP 2nd Half O/U 0.5 | 100% |
| Sporting CP 2nd Half O/U 1.5 | 100% |
| CF Estrela da Amadora (-1.5) | 0% |
| Sporting CP (-1.5) | 0% |
| CF Estrela da Amadora (-2.5) | 0% |
| Sporting CP (-2.5) | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 0.5 | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| CF Estrela da Amadora O/U 2.5 | 0% |
| Sporting CP O/U 2.5 | 0% |
| CF Estrela da Amadora 1st Half O/U 0.5 | 0% |
| CF Estrela da Amadora 1st Half O/U 1.5 | 0% |
| Sporting CP 1st Half O/U 0.5 | 0% |
| Sporting CP 1st Half O/U 1.5 | 0% |
Market context
CF Estrela da Amadora meet Sporting CP in a Primeira Liga fixture scheduled for 8 August, and the crowd is currently assigning **0% YES** to the “more markets” outcome, which usually implies the market expects no qualifying extra condition to be triggered or that no additional market event will be opened in practice. On the football side, the underlying match pricing is heavily one-sided: Sporting are generally around 1.21–1.34 to win, while Estrela are priced from about 10.5 to 11.8 and the draw around 5.0–6.2, pointing to a clear away-favourite baseline rather than a tight contest.[1][2][6]
For context, this is the sort of fixture where a very low-probability side market tends to sit near zero unless there is a late procedural development, a rules clarification, or an unusually specific announcement that creates a separate settlement path. Comparable pre-match pricing across bookmakers has consistently kept Sporting in the high-70s to low-80s implied win range, with the “no” side of the broader game market dominant as well, so a 0% read is broadly in line with the consensus rather than an outlier.[12][14][15]
The main catalyst to watch is not a polling-style swing, but the official matchday flow: line-up declarations, any pre-kick-off club or league notice, and whether the market’s settlement logic depends on a newly defined or separately listed auxiliary market before the 19:30 UTC deadline. Recent odds pages and previews already reflect a stable away-favourite position, so absent a late announcement or market reclassification, traders are mostly leaning on scheduled team news and the final competition listing rather than any external narrative shift.[4][6][11]
Methodology
This page tracks CF Estrela da Amadora vs. Sporting CP - More Markets 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 Election Predictions UK 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 Election Predictions UK 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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