Prime Minister Keir Starmer's resignation date has been pushed back by a week, from 14 August to 20 August 2026, according to the latest Polymarket data. The market now implies an ~86% chance Starmer will still be PM on that later date.
The shift in the expected resignation timeline comes amid ongoing political uncertainty. Starmer has faced growing pressure from Labour MPs, with the number calling for him to step down now reaching the triple digits.