Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Election Predictions UK) Pick polygram.ink (preferred broker) |
44% | 56% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
44% | 56% | 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 → |
Market context
The real-world event is whether commercial shipping through the Strait of Hormuz gets back to a **7-day moving average of at least 60 transit calls** on IMF PortWatch by year-end, and the market is currently leaning **slightly towards Yes at 56%**. That price is consistent with the idea that traders are expecting continued de-escalation in the Gulf, but not a frictionless return to pre-crisis conditions.[1][5]
Historically, comparable shipping-disruption markets have been very sensitive to whether security gains are durable rather than merely tactical. Reuters reported in April that Hormuz traffic was still at “well below 10% of normal volumes” even after a ceasefire, while later reporting and trade commentary pointed to slow recovery constrained by warnings, mines and backlog effects rather than an immediate snap-back.[16][18] That makes the current probability easier to read as a bet on gradual normalisation, not a clean peace dividend; in other words, traders appear to be pricing eventual improvement, but with enough caution that a single setback could keep the 60-call threshold out of reach.[1][19]
The main catalyst to watch is any fresh **security or diplomatic announcement** affecting navigation guarantees, tanker routing, or mine-clearing, because those are the variables most likely to change the PortWatch series quickly. The current lean is also being framed by market chatter around ceasefire diplomacy, with OctagonAI noting that the move in the contract was tied to reported progress in talks to reopen the Strait, while Polymarket still shows trader consensus around the mid-50s rather than a decisive breakout.[1][5] For traders, the key dependency is not just headlines but whether they translate into sustained weekly ship counts in the IMF data, since the market settles on the published moving average rather than on political rhetoric alone.[1]
Methodology
This page tracks Strait of Hormuz traffic returns to normal by December 31? 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.
- 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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