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

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Market context

Keir Starmer has resigned as leader of the UK Labour Party but will remain caretaker Prime Minister until a new leader is appointed, meaning he has not permanently ceased occupying office. This distinction is critical because the market requires permanent removal, not a scheduled leadership change or interim continuation. Historical precedents like France’s Gabriel Attal, who stayed as caretaker PM, confirm that such transitional roles do not trigger resolution, reinforcing why the crowd-implied probability sits at 0% for any leader exiting before 2027.

Traders must watch the July 9 Labour leadership election and whether Andy Burnham, the likely successor, is forced out by an early general election before December 31, 2026. While Nigel Farage has predicted an early 2027 election due to economic turmoil, no such vote is scheduled before 2029, and Burnham’s tenure would only count if he is permanently removed, not merely suspended or replaced via caretaker status. Recent reporting from Al Jazeera confirms Starmer’s resignation was prompted by internal Labour dissent and a Makerfield by-election loss, but his continued caretaker role blocks any resolution under current rules[1].

The market’s 0% probability reflects the structural barrier: no listed leader has faced permanent removal, and all transitions so far involve interim or caretaker phases. Even if Burnham becomes PM, his exit would only qualify if an election is called and lost before the settlement window closes—a scenario with no current legislative or electoral pathway. Without a confirmed early election or permanent dismissal, the resolution remains “None before 2027”[2].

Sources: 1 · 2 · 3 · 4 · 5

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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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'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 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.