Which G7 leader will leave next?

**Stage 1 — Blind analysis (ignore market prices):**

I evaluate the probability that the UK prime minister will be the first G7 leader to leave office by considering institutional durability, recent political dynamics across the G7, historical turnover patterns, and proximate risk factors for each leader. The available news provides no indication of an imminent UK leadership change; there are no credible reports of resignation, criminal exposure, terminal health issues, or a looming UK election or confidence mechanism that would force an immediate exit. Historically, some G7 offices are more turnover-prone (notably Japan and Italy), while others (Germany, UK under a comfortable majority government, France under a strong presidency) tend to be more stable. Given this, the UK is a plausible candidate but not the most likely first-exiter when compared against leaders in countries with higher baseline turnover risk.

Key points shaping my blind probability: - Institutional and electoral context: If the UK prime minister is governing with a solid majority and party unity, the probability of an early forced removal is lower than for leaders in fragile coalitions (Italy) or in parties with frequent leadership contests (Japan historically). This reduces the baseline risk for the UK relative to high-turnover G7 cases. - Comparative turnover history: Postwar Japan and Italy have had frequent leadership changes; this structural pattern increases their leaders' chance of being the first to go. France's presidential system is stable in terms of removal (no easy parliamentary ouster) but presidents can lose re-election; still, a sudden first-exit (resignation or health) is less common. Germany tends to be stable under a chancellor with coalition control, but internal party dynamics can still produce surprises. - No proximate triggers in the news: The summit logistics and unrelated leadership changes (e.g., Solomon Islands) provide no immediate reason to single out the UK PM as first to leave.

Balancing these factors, my independent (blind) probability that the UK prime minister will be the first G7 leader to leave is 30%. This reflects that while the UK PM is certainly within the plausible set of early exits, structural features and the lack of proximate triggers reduce the posterior probability relative to 50/50.

**Stage 2 — Market calibration (look at current market prices):**

The current market assigns approximately 76% to the UK prime minister being first to leave (Keir Starmer listed at 76% in the multi-outcome view). My independent assessment (30%) is materially lower than that market price. Possible explanations for the market divergence:

- *Misinterpretation by traders:* The market phrasing or UI may have led traders to conflate 'Will the Prime Minister of the United Kingdom be the first to leave office?' with simpler 'Will any G7 leader leave soon?' or to bet heavily on a single, salient name (UK PM) out of convenience. This kind of framing error can concentrate liquidity on a single outcome. - *Recency or attention bias:* Players may overweight high-profile leaders or those most discussed in English-language media. The UK is intensely covered internationally, which can create an illusion of higher risk relative to less-visible leaders. - *Low-information liquidity play:* Large participants or a few well-funded bettors may have placed significant positions in the UK outcome, moving the price beyond what fundamentals justify. The event volume (76,844 contracts) is notable but could still be dominated by a small number of large trades. - *Risk aversion and portfolio hedging:* Some traders may be using this market as a hedge against political volatility and concentrate on a single easily-understood outcome rather than distributing across multiple plausible first-exit candidates.

Given these potential market frictions, I believe the market is currently *overpricing* the UK's probability of being the first to leave. If you are trading, this spread suggests a value opportunity to short the UK-first outcome and reallocate to higher-risk structural candidates (Japan, Italy) or to Macron depending on your risk tolerance and information edge.

**Comparative summary:** - Independent (blind) view: UK PM first to go — 30%. - Market price: UK PM first to go — 76%. - Conclusion: The market appears to overweight the UK relative to structural turnover risks elsewhere in the G7. Absent new information (health, scandal, imminent election, or internal party collapse), I view current prices as mispriced toward the UK outcome.