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 |
|---|---|
| Map 1 Winner | 100% |
| Map 2 Winner | 100% |
| Match Winner | 100% |
| Map Handicap: ISG (-1.5) vs Grêmio Esports (+1.5) | 100% |
| Map 2 Total Rounds: Over/Under 21.5 | 100% |
| Map 1 Rounds Handicap: Isurus (-3.5) vs Grêmio Esports (+3.5) | 100% |
| Map 1 Rounds Handicap: Isurus (-6.5) vs Grêmio Esports (+6.5) | 100% |
| Map 3 Rounds Handicap: Isurus (-3.5) vs Grêmio Esports (+3.5) | 50% |
| Map 3 Total Rounds: Over/Under 21.5 | 50% |
| O/U 2.5 Games | 0% |
| Map 2 Rounds Handicap: Isurus (-3.5) vs Grêmio Esports (+3.5) | 0% |
| Map 2 Rounds Handicap: Isurus (-6.5) vs Grêmio Esports (+6.5) | 0% |
| Map 1 Total Rounds: Over/Under 24.5 | 0% |
| Map 1 Rounds Handicap: Isurus (-9.5) vs Grêmio Esports (+9.5) | 0% |
| Map 1 Total Rounds: Over/Under 21.5 | 0% |
| Map 1 Total Rounds: Over/Under 18.5 | 0% |
| Map 2 Total Rounds: Over/Under 24.5 | 0% |
| Map 2 Rounds Handicap: Isurus (-9.5) vs Grêmio Esports (+9.5) | 0% |
Market context
Isurus and Grêmio Esports are scheduled to compete in a best-of-three Counter-Strike match during the BetBoom Storm Group Stage on 10 August at 7:00PM ET. The market currently reflects 100% implied probability for Isurus, suggesting traders view the Argentine organisation as heavily favoured. Resolution depends on match completion by 11 August at 05:15 UTC; cancellation, ties, or delays beyond seven days without a determined winner trigger a 50-50 split.
Historical precedent in regional Counter-Strike tournaments shows that South American teams often experience fixture delays and administrative complications, particularly across borders. Isurus has established itself as a stronger regional performer in recent LAN qualifiers, whilst Grêmio Esports represents a newer competitive entry. The 100% probability reading likely reflects Isurus's superior recent form and head-to-head record rather than absolute certainty of match occurrence.
Traders should monitor BetBoom's official schedule and social media channels for any postponement announcements in the 48 hours preceding the fixture. Technical issues, visa delays, or travel disruptions have historically affected South American esports events. The settlement window's seven-day buffer provides some protection against minor scheduling slips, but any announcement of rescheduling beyond 17 August would materially alter resolution conditions. Confirmation of both teams' arrival and equipment setup typically occurs 12–24 hours before match start.
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 Counter-Strike: Isurus vs Grêmio Esports (BO3) - BetBoom Storm Group Stage 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.
- Are political prediction markets legal in my country?
- It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.
- 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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