The date by which Prime Minister Keir Starmer is expected to resign has been pushed back by 3 days, according to the Polymarket prediction market. The resignation date has shifted from 12 September to 15 September 2026.
The change in the Polymarket contract implies an ~86% chance that Starmer will still be Prime Minister on 15 September, up from an ~86% chance he would resign by 12 September. The shift suggests growing confidence Starmer will remain in office for longer than previously expected.