Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Champions League Prediction) Pick polygram.ink (preferred broker) |
72% | 28% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
72% | 28% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Darline Graham Nordone | 72% |
| Candidate A | 50% |
| Candidate B | 50% |
| Candidate C | 50% |
| Candidate D | 50% |
| Candidate E | 50% |
| Candidate F | 50% |
| Candidate G | 50% |
| Candidate H | 50% |
| Candidate I | 50% |
| Candidate J | 50% |
| Other | 50% |
| Ralph Norman | 23% |
| Russell Fry | 7% |
| Duke Buckner | 0% |
| Mark Lynch | 0% |
| Mark Sanford | 0% |
| Sheri Biggs | 0% |
| Pamela Evette | 0% |
| Trey Gowdy | 0% |
| Henry McMaster | 0% |
Market context
The Republican special Senate primary in South Carolina is scheduled for 11 August, with the first-round vote deciding the market rather than any runoff.[7] The crowd price at 0% for Yes implies traders currently see the contract as effectively resolved against the listed outcome, so the key question is whether the candidate slate and filing status are already fixed enough to leave little room for a late surprise.[14]
The cleanest historical read comes from the state’s last regular Senate primary in 2026, when Lindsey Graham won outright with 56.8% against a fragmented field, while Mark Lynch finished a distant second on 28.9%.[5][11][16][17] That kind of one-front-runner result matters because South Carolina Republican primaries have often rewarded name recognition, donor strength and consolidated establishment backing, while a crowded anti-incumbent or anti-establishment lane has tended to split the rest of the vote. Comparable statewide Republican contests in South Carolina have also produced decisive first-round winners rather than knife-edge counts, which makes the market’s current pricing easier to understand.[18]
For traders, the main catalysts are filing and ballot-certification updates from the South Carolina Election Commission, final candidate lists, and any last-minute endorsements or withdrawals that could re-route votes between the leading contenders.[7][14] The election commission’s special-primary page confirms the statewide special primary date, while live-result pages from NPR and AP show no votes reported yet, so the first real signal will be turnout patterns and county returns once polls close.[1][4][9] Polymarket’s current board shows Darline Graham Nordone ahead of Ralph Norman and Russell Fry in related South Carolina Republican Senate contracts, which suggests traders are already treating the race as a three-way contest shaped by name recognition and factional consolidation rather than a fully open field.[8][13]
Methodology
Football-specific comparison page for South Carolina Senate Special Republican Primary: First Round Winner. 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 (US-focused) or Manifold (play-money).
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
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- 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.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- Can I trade Premier League prediction markets from the UK?
- Yes. Polymarket has Premier League outcome markets (title winner, relegation, top scorer). For UK traders wanting GBP settlement and UKGC protection, Betfair Exchange and Smarkets offer Premier League futures and match markets. Betfair is the deepest liquidity venue for UK football exchange markets.
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