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 |
|---|---|
| Nashville SC (-1.5) | 100% |
| Nashville SC (-2.5) | 100% |
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| O/U 3.5 | 100% |
| O/U 4.5 | 100% |
| Both Teams to Score | 100% |
| Both Teams to Score in First Half | 100% |
| 1st Half O/U 0.5 | 100% |
| 1st Half O/U 1.5 | 100% |
| 1st Half O/U 2.5 | 100% |
| Nashville SC O/U 0.5 | 100% |
| Nashville SC O/U 1.5 | 100% |
| Nashville SC O/U 2.5 | 100% |
| Atlético San Luis O/U 0.5 | 100% |
| Nashville SC 1st Half O/U 0.5 | 100% |
| Nashville SC 1st Half O/U 1.5 | 100% |
| Atlético San Luis 1st Half O/U 0.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| Nashville SC 2nd Half O/U 0.5 | 100% |
| Atlético San Luis (-1.5) | 0% |
| Atlético San Luis (-2.5) | 0% |
| O/U 5.5 | 0% |
| Atlético San Luis O/U 1.5 | 0% |
| Atlético San Luis O/U 2.5 | 0% |
| Atlético San Luis 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| Nashville SC 2nd Half O/U 1.5 | 0% |
| Atlético San Luis 2nd Half O/U 0.5 | 0% |
| Atlético San Luis 2nd Half O/U 1.5 | 0% |
Market context
Nashville SC’s Leagues Cup meeting with Atlético de San Luis is the key real-world event behind this market, and the 100% Yes pricing reads like a certainty view on the match taking place rather than on a contested sporting outcome. The strongest frame for that reading is the published fixture itself: GEODIS Park was scheduled to host the game on Sunday, 9 August, with multiple match listings confirming the venue and kick-off window.[2][4][5]
Comparable cases point to why traders often treat this kind of market as largely procedural once a fixture is locked in. Nashville entered the tie after a 1-0 opening loss to Club León, while San Luis also arrived on zero points after losing to Inter Miami; the Leagues Cup preview said both sides had “no margin for error” and that home-field advantage could matter, but those are match-performance cues, not signals about whether the event exists at all.[3][5] For a “More Markets” contract, the historical analogue is usually a scheduled fixture market that only moves if the game is cancelled, postponed, or materially altered.
The catalyst to watch is therefore not poll movement or a debate calendar, but operational confirmation: late venue changes, weather-related disruption, broadcast/competition adjustments, or an administrative postponement would be the only obvious ways to threaten settlement.[4][20] Recent previews from the Leagues Cup and Nashville SC both treated the match as firmly on the schedule, and Sports Mole’s pre-match model also priced a normal 90-minute contest, which is consistent with the market leaning on fixture confirmation rather than any live uncertainty.[3][5][7]
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 Nashville SC vs. Atlético San Luis - More Markets 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.
- Can prediction markets influence election outcomes?
- Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.
- 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.
- 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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