Starmer out by 2025?

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Market context

Keir Starmer would have to cease being prime minister before the end of 2025 for this market to settle Yes, and the current 0% price implies traders see that outcome as effectively off the table. That is consistent with how leadership-exit markets often trade when the incumbent remains in office and no formal resignation process is under way: they can sit near zero for long stretches, then reprice sharply only when there is a concrete trigger such as a resignation statement, a leadership contest, or a clear party management breakdown.

Comparable UK prime minister markets have tended to move on visible procedural steps rather than background speculation. Once a resignation is announced, settlement can follow immediately under these terms, but absent that, the market usually needs a firm change in circumstances rather than press noise alone. Starmer’s position has been stabilised by the fact that he still leads Labour and remains in Downing Street, even though polling, internal pressure, and ministerial reshuffles can all shape expectations around his tenure.

For traders, the main catalysts are any direct resignation or removal announcement, signs of cabinet or parliamentary revolt, and the timing of major set-piece events that can reset political pressure. Morningstar noted on 21 May 2026 that analysts were watching the pound and gilt yields for signs of market stress around a possible leadership change, while recent reporting has also linked earlier talk of a challenge to sharp but temporary moves in UK rates and sterling. The key dependency is whether any internal Labour contest turns from speculation into formal action before the 2025 year-end cutoff; without that, the market is likely to remain pinned near zero.

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Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.