Starmer out by July 31, 2026?

Prediction markets have essentially written Keir Starmer's political obituary — the end-of-2026 probability for him leaving office sits well above the coin-flip line. The July 31 contract is the more interesting instrument precisely because it isn't a slam dunk. The market is saying the outcome is likely, the timing is not. Starmer is on borrowed time; the question is whether the clock runs out in the next seven weeks or drags into autumn. The political backdrop makes the short-dated contract genuinely uncertain. Starmer has publicly and repeatedly ruled out resignation, framing his mandate around delivering economic results. That kind of explicit commitment raises the cost of a voluntary exit — it doesn't prevent one, but it means a departure before July 31 almost certainly requires either an internal coup that strips him of the numbers to survive, or an external shock significant enough to override the political management calculation. Neither is imminent, but both are live. The mechanism matters here. Angela Rayner and Wes Streeting have been the most visibly active figures in the maneuvering, but a formal no-confidence push inside Labour requires coordination that typically takes longer than seven weeks to execute cleanly — especially when the likely successors have their own reasons to let Starmer absorb more political damage before forcing the issue. The most plausible short-dated scenario isn't an organized coup; it's a sudden collapse in Starmer's internal support following a specific triggering event that makes the current standoff untenable. That's a meaningful but genuinely unpredictable probability — which is exactly what sub-50% on a seven-week window reflects.