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

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Market context

The underlying real-world event is the imminent and permanent removal of UK Prime Minister Keir Starmer from office, with Andy Burnham widely expected to assume the role within weeks. This transition, described by the BBC as a likely "coronation," marks a fifth leadership change in four years, yet the market assigns a 0% probability to any leader ceasing office permanently before 2027 because the resolution criteria demand permanent expulsion, not a scheduled electoral departure or resignation[1].

Historical precedents such as Gabriel Attal’s caretaker role in France illustrate why temporary or interim positions do not satisfy the market’s strict definition of ceasing office, reinforcing the current 0% valuation[2]. Traders must monitor for any announcement of a permanent removal, such as a lost confidence vote forcing resignation without an immediate successor, or a court-ordered dismissal, rather than routine electoral transitions. Recent reports from the Daily Telegraph indicate Burnham aims to take office by September, while Reform UK leader Nigel Farage has called for an immediate election, suggesting political volatility that could trigger a permanent exit if the government loses a confidence vote[1][3].

The cultural narrative momentum around frequent leadership changes in the UK contrasts sharply with the market’s rigid voting mechanics, which mirror the Oscars’ preferential ballot by excluding provisional transfers like impeachment suspensions. With the settlement window ending on 31 December 2026, the only catalysts that could shift the probability are permanent removals, not scheduled departures or caretaker roles, making the current 0% probability a reflection of the criteria’s exclusivity rather than political stability[2][6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.