The date by which Prime Minister Keir Starmer is expected to resign has been pushed back by 2 days, from 12 Aug 2026 to 15 Aug 2026, according to the latest Polymarket data.
The shift in the implied resignation date suggests the market is now less certain Starmer will step down by the original 12 Aug deadline, with the probability of him remaining PM on 15 Aug now around ~86%.