The date by which Prime Minister Keir Starmer is expected to announce his resignation has been pushed back by 1 day, from 26 Aug 2026 to 27 Aug 2026, according to Polymarket data.
The shift in the implied resignation date comes as the probability of Starmer remaining as PM on that date has increased to ~86%.
Polymarket traders are now pricing in a higher likelihood of Starmer staying on as Prime Minister beyond the end of August 2026.