Who will be in the Burnham cabinet?

Platform comparison

Market context

Andy Burnham has officially unveiled his first Cabinet as Prime Minister, confirming the full roster of ministers who will serve under him following his appointment. The list includes John Healey as Chancellor, Ed Miliband as Foreign Secretary, and Louise Haigh as First Secretary of State, with Shabana Mahmood retaining the Home Office [1][2]. This immediate confirmation of the cabinet lineup explains the 100% crowd-implied probability for the market, as the appointments were completed within the required seven-day window after Burnham took office.

Historically, new UK Prime Ministers have consistently announced their full Cabinet within days of appointment, with the 2024 Starmer Cabinet and the 2010 Cameron-Clegg Cabinet both following this pattern of rapid consolidation. The 100% probability here aligns with these precedents, as the market resolves based on whether the individual was confirmed as a minister during the appointment window, not on future tenure. Since Burnham’s Cabinet was unveiled on 20 July 2026, all listed individuals in the market who appear on the official list are effectively confirmed, making the outcome certain unless the market refers to someone not on the list [2][3].

Traders should monitor the official Cabinet Office register and any subsequent reshuffle announcements, though no changes are expected before the settlement date of 31 December 2026. The key catalyst was Burnham’s 20 July announcement, which settled the composition of the Cabinet definitively [1]. Any future ministerial changes after the seventh day post-appointment do not affect this market’s resolution, as qualification is strictly tied to the initial appointment period. The market leans entirely on the confirmed 20 July list, with no pending debates or declarations altering the outcome [2][4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Who will be in the Burnham cabinet? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.