The date by which Prime Minister Keir Starmer is expected to announce his resignation has been pushed back by 1 day, from 13 August 2026 to 14 August 2026, according to the latest Polymarket prediction data.
The shift in the implied resignation date comes as the probability of Starmer remaining as PM on 14 August 2026 has risen to ~86%, up from ~82% previously. Traders on the Polymarket platform have adjusted their bets to reflect the changing outlook.