Starmer out by 2025?

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Market context

Keir Starmer became Prime Minister in July 2024 following Labour's general election victory. This market examines whether he will cease holding that office at any point between early February and the end of 2025, whether through resignation, removal, or any other mechanism. The resolution triggers immediately upon announcement of departure, regardless of the effective date. The 0% implied probability reflects the current political stability and absence of imminent constitutional crisis signals.

UK Prime Ministers typically face removal through either parliamentary confidence votes or voluntary resignation. The last sitting PM to lose a confidence vote was Margaret Thatcher in 1990; more recently, Boris Johnson resigned in September 2022 after sustained ministerial departures, whilst Liz Truss lasted 49 days before resigning in 2022. Starmer commands a substantial Commons majority of 137 seats, materially reducing the mechanical risk of a confidence defeat. Historical precedent suggests resignation typically follows either catastrophic policy failure, personal scandal, or haemorrhaging of ministerial support—conditions not currently evident in reporting.

Traders monitoring this market should track parliamentary rebellions on major legislation, particularly around welfare reform or fiscal policy, alongside any developments in ongoing investigations or personal matters affecting the Prime Minister. The spring 2025 budget announcement and any significant by-election results will provide early signals of backbench stability. Media reporting from outlets including the BBC, The Guardian, and The Telegraph remains the primary source for tracking ministerial sentiment and party cohesion. Regulatory accessibility varies by jurisdiction: US traders face CFTC oversight of prediction markets, whilst German participants should note GlüStV licensing requirements. Markets accessible without KYC verification up to $1,500 notional value may apply different reporting thresholds depending on the platform's regulatory registration.

Methodology

We track Starmer out by 2025? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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 Polymarket Tax UK, 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?

Polymarket Tax UK 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.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Polymarket Tax UK?

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

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.