Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Election Predictions UK) Pick polygram.ink (preferred broker) |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
0% | 100% | 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 |
|---|---|
| August 31 | 0% |
| August 15 | 0% |
Market context
The Strait of Hormuz remains the key oil chokepoint because even small changes in ship movements there quickly feed into freight, insurance and crude pricing. This market resolves only if IMF Portwatch’s 7-day moving average of ship arrivals reaches at least 60, so traders are effectively betting on a sustained recovery in traffic rather than a one-day spike; that is why the crowd’s 6% YES price is consistent with a still-fragile passage that has not yet normalised. Reuters has noted that under the interim U.S.-Iran arrangement, transit was supposed to become unimpeded, but the flow would still need to rebuild from war disruption and security risk[3][11].
Historical comparisons suggest the bar is high. Brookings and the CFR both argue that even after a reopening, vessel insurance, infrastructure repair, mistrust and residual security threats can keep traffic below pre-war levels for months, while Reuters said the strait could reopen formally yet still fall short of its earlier peak for some time[9][15][11]. That framing fits the market’s low probability: the question is not whether ships return, but whether enough regular container, bulk, tanker and cargo calls are logged to lift the 7-day average back above 60.
The main catalyst is any durable diplomatic or security announcement affecting vessel access, especially formal U.S.-Iran statements, enforcement changes, or shipping-insurance signals. CNBC reported in late June and again in July that prediction-market traders had cut expectations for a quick recovery after the ceasefire with Iran wobbled, with odds for normal traffic by early August falling sharply[14][10]. For traders, the next move is likely to depend less on oil-price headlines than on whether the Portwatch data keep trending up week by week toward the threshold.
Methodology
This page tracks Strait of Hormuz traffic returns to normal by 2026? 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
- 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 Election Predictions UK route into the same order book at 0% fees.
- 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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