Next leader out of power before 2027? (No Orban)

Platform comparison

Market context

Keir Starmer remains caretaker prime minister despite stepping down as Labour leader, meaning he has not yet been permanently removed from office and the market’s 0% YES probability reflects this interim status. The contract only resolves on permanent removal, excluding caretaker roles or scheduled election departures, which aligns with Starmer’s current position until Andy Burnham is formally chosen as the new Labour leader and assumes the premiership [2][4].

Historically, similar “caretaker” transitions—such as when UK leaders resign party roles but stay as PM during succession—have not triggered prediction market resolutions until the successor’s official appointment, as temporary power transfers do not count. Comparable cases like Yoon Suk Yeol’s impeachment suspension or interim US presidential transfers under the 25th Amendment were excluded from resolution, reinforcing that only definitive, permanent exits qualify [2][4].

Traders should monitor the Labour leadership contest timeline, with Burnham expected to be confirmed by mid-to-late July 2026, and any subsequent formal swearing-in as prime minister, which would mark Starmer’s permanent removal. Reuters reports Burnham will unveil his governance plan on Monday, 30 June, accelerating the succession process, while BBC notes Starmer faces pressure after Labour’s May election losses, with MPs split on his future [1][8]. The next UK general election is mandated by August 2029, so any early departure hinges solely on internal party mechanics, not public vote outcomes [7][8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

Can I use Bitcoin directly?

No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.

How volatile are crypto prediction markets?

Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.

Which crypto markets exist on Polymarket?

Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.

Are crypto prediction markets taxable in the US?

In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.