Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
67% | 33% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
67% | 33% | 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 |
|---|---|
| O/U 4.5 | 67% |
| 1st 5 Innings Spread -1.5 | 50% |
| 1st 5 Innings O/U 2.5 | 50% |
| 1st 5 Innings O/U 3.5 | 50% |
| 1st 5 Innings O/U 4.5 | 50% |
| 1st 5 Innings O/U 5.5 | 50% |
| 1st 5 Innings O/U 6.5 | 50% |
| O/U 5.5 | 50% |
| Chicago Cubs vs. Washington Nationals | 42% |
| O/U 6.5 | 41% |
| Spread -1.5 | 32% |
| O/U 7.5 | 29% |
| Spread -1.5 | 28% |
| Extra Innings | 25% |
| O/U 8.5 | 22% |
| 1st 5 Innings Spread -1.5 | 20% |
| Spread -2.5 | 17% |
| Spread -2.5 | 17% |
| O/U 9.5 | 14% |
| NRFI | 0% |
Market context
The Chicago Cubs face the Washington Nationals on 13 August at 4:05PM ET in a regular-season Major League Baseball fixture. The market currently prices a Cubs victory at 36 per cent, implying a slight favouring of the Nationals. This probability reflects pre-game conditions including recent team form, roster availability, and ballpark factors specific to the scheduled venue.
Historical matchups between these franchises provide limited predictive power for individual games, though seasonal head-to-head records and divisional standing offer context. The Cubs and Nationals occupy different competitive positions within their respective divisions; Cubs performance against comparable opponents this season and the Nationals' recent win-loss trajectory establish baseline expectations. Teams with stronger records typically command higher implied probabilities in single-game markets, though injuries, bullpen depth, and starting pitcher matchups frequently override seasonal trends.
Traders should monitor roster announcements through to game time, particularly regarding pitcher assignments and injury status updates from either organisation. Weather conditions at the scheduled venue—temperature, wind direction, and precipitation forecasts—materially affect run-scoring environments and thus game outcomes. Recent performance streaks for both teams, available through MLB.com official statistics and ESPN's live standings, shift probability assessments in the hours before first pitch. Any postponement triggers the market's extension clause, holding resolution until completion; cancellation without a make-up fixture would trigger a 50-50 split resolution per the stated terms.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $425K.
Methodology
This page tracks Chicago Cubs vs. Washington Nationals 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
For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.
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.
- 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.
- How fast do political markets react to news?
- High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.
- 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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