PM Starmer's resignation date pushed back to 22 September, Polymarket bettors say
·implied p50 shift
Briefing
According to Polymarket, the implied resignation date for Prime Minister Keir Starmer has shifted 3 days later, from 19 September 2026 to 22 September 2026.
This change reflects the latest betting activity on the platform, which suggests the probability of Starmer remaining PM on 22 September is now around ~86%. Polymarket users are now pricing in a later exit for the Labour leader.