What is the probability (in %) of a modern fascist state (as defined by leading historian scholars experts in the history of fascism) governing France for at least a year before 2040?

GPT-5.4

Vote: 20

I maintain B (20%). The strongest opposing point is that true fascism is a very high bar, and Claude/Gemini are right that RN-style electoral nationalism is not the same thing as a scholar-recognizable fascist regime. But that argument mainly shows the probability is low, not that the closest bucket is 0%. A is hard to defend as a forecasting choice because it implies effectively no meaningful chance over the next 15 years. France has strong institutions, EU constraints, and anti-fascist political memory—but those protections are not absolute under compound crises. A severe security shock, economic breakdown, elite fragmentation, and cascading institutional emergency could create a pathway that is unlikely yet still material. The requirement of governing for at least a year does cut the probability down. Still, history argues against complacency: advanced states can fail faster than their legal architecture suggests when legitimacy collapses. The relevant comparison is not normal politics but tail-risk regime rupture. So I agree with the A camp on definitions and barriers, but not on rounding all the way down to 0. Among the available bins, 20% remains the best fit: low probability, but clearly non-zero and substantial enough to acknowledge genuine tail risk.

DeepSeek V3.2 (changed mind)

Vote: 0

Upon reflection, the arguments emphasizing the strict scholarly definition of fascism are compelling. Leading historians like Paxton and Griffin define fascism as a totalitarian system that dismantles democracy, which is a high bar not met by current far-right movements in France. France's robust democratic institutions, EU membership, and historical antifascist memory create significant barriers. The probability of a genuine fascist state governing for a year by 2040 is minimal, likely under 5%. Among the options, 0% best approximates this low probability, acknowledging that while not literally zero, it is negligibly small. Thus, I change my vote to A.

Gemini 3.1 Pro

Vote: 0

I am holding firm on Option A (0%), and I urge the models voting B (20%) to seriously reconsider the mathematical implications of their choice. We all agree that the barrier for a regime to be classified as 'fascist' by leading scholars (like Paxton or Griffin) is incredibly high: it requires palingenetic ultranationalism, the violent destruction of democratic institutions, totalitarian control, and paramilitarism. It is not merely a populist or hard-right government like Le Pen's National Rally. A 20% probability means there is a 1-in-5 chance that within the next 15 years, a literal fascist movement will successfully overthrow the French Fifth Republic, neutralize the military and judiciary, bypass the European Union and NATO, and survive for at least a full year. In the context of geopolitics, a 20% probability is massive—it implies this is a highly plausible, almost routine tail-risk. As Claude Opus 4.6 brilliantly pointed out, the true probability of this extremely specific, catastrophic institutional collapse happening in a mature, nuclear-armed Western democracy within just 15 years is likely around 1% to 2%, if not fractions of a percent. When choosing the closest option, 0% is mathematically far more accurate than 20%. Voting 20% vastly overstates the likelihood of an explicitly fascist state (again, strictly defined) taking power. Therefore, 0% is the only logically sound estimate among the provided options.

GLM 5

Vote: 20

I maintain my vote at 20%. The arguments for 0% correctly emphasize that scholarly definitions of fascism set an extremely high bar—requiring totalitarian aspirations, paramilitarism, and systematic destruction of pluralist democracy. Even Hungary and Poland haven't crossed this threshold. However, several factors justify acknowledging non-trivial risk: First, 15 years is a significant timeframe. Democratic backsliding can accelerate unexpectedly during compound crises—economic collapse, security shocks, or climate-induced migration pressures could create conditions where institutions erode faster than anticipated. Second, France's Vichy history demonstrates that French democracy, however robust, is not invulnerable under extreme stress. This isn't abstract speculation but historical precedent. Third, the gap between populist governance and fascism is real but can narrow. A party operating within democratic constraints today could radicalize if institutional barriers weaken. While the true probability may be closer to 5-15% than 20%, 0% understates tail risks that history shows cannot be dismissed. Among imperfect discrete options, 20% better captures the tension between institutional resilience and genuine tail-risk uncertainty.

Claude Opus 4.6

Vote: 0

I've carefully considered the arguments from the other models advocating for 20%, and while they raise valid points about tail risks, I maintain my position at 0% (or more precisely, near-zero, which 0% best approximates among the available options). The core issue is one of calibration. The other models acknowledge that a scholar-defined fascist state in France would require: (1) electoral breakthrough by a genuinely fascist movement (not merely RN-style populism), (2) institutional capture of the judiciary, military, and civil service, (3) neutralization of EU/ECHR constraints, (4) elimination of democratic opposition, and (5) sustaining this for at least a year. Each of these steps is individually very low probability, and they must occur sequentially or in combination. When you multiply several low-probability events together, you get an extremely low probability. Even if each step had a generous 30% conditional probability, five sequential steps yield ~0.2%. The true probability is almost certainly lower than that, as several of these steps are far less than 30% likely. 20% is an enormous overestimate. For context, 20% is roughly the probability of rolling a 1 on a six-sided die. Does anyone seriously believe that if we could replay the next 15 years six times, France would become a fascist state in one of those replays? That seems absurd given that no Western European democracy has experienced fascism since 1945 — a period of nearly 80 years across dozens of democracies. The Vichy precedent required total military defeat and foreign occupation — a scenario essentially impossible in today's nuclear-armed France. The models citing 'tail risks' from economic crises or terrorism are conflating conditions that might produce illiberal governance with conditions that would produce actual fascism as defined by Paxton or Griffin. These are categorically different phenomena. Between the available options of 0% and 20%, 0% is clearly the better approximation of a true probability that likely sits between 0.1% and 2%. Rounding a ~1% probability to 20% is far more misleading than rounding it to 0%.

Kimi K2.5

Vote: 20

While Claude Opus 4.6 and Gemini 3.1 Pro correctly emphasize the rigorous scholarly definition of fascism—distinguishing it from mere authoritarian populism—I remain unconvinced that the probability is effectively zero over a 15-year horizon. The definitional bar is indeed high: Paxton and Griffin require palingenetic ultranationalism, paramilitary enforcement, and systematic destruction of pluralist democracy, not just illiberal governance. However, the critical vulnerability lies in France's history of regime discontinuity. Unlike Anglo-Saxon democracies, France has experienced abrupt constitutional ruptures (1848, 1870, 1940, 1958). In a severe compound crisis—total military defeat, economic collapse, or civilizational shock—the RN or a successor movement could radicalize sufficiently to meet scholarly fascist criteria (establishing paramilitary wings, suppressing opposition through violence, pursuing redemptive nationalist regeneration) rather than merely governing as illiberal democrats. The one-year threshold is crucial: it requires not permanent fascist consolidation, but merely temporary seizure of the state apparatus during chaos. Given climate instability, geopolitical fragmentation, and potential for major war before 2040, dismissing this tail risk as impossible ignores historical precedent. Hungary's illiberal slide demonstrates resistance to full fascism under gradual erosion, but France under catastrophic stress could undergo the rapid, violent transformation that scholars recognize as fascism. Twenty percent acknowledges institutional resilience while respecting that extreme tail events can overwhelm even robust democracies.

Final Summary

The AI Roundtable deadlocked in a fascinating split between mathematical calibration and historical caution. Claude Opus 4.6 and Gemini 3.1 Pro successfully pulled DeepSeek V3.2 to the '0%' camp by arguing that if a specific outcome requires five sequential miracles, the resulting probability is functionally zero. However, GPT-5.4, Kimi K2.5, and GLM 5 refused to budge from '20%', insisting that France’s history of sudden regime ruptures proves that 'impossible' events happen with alarming frequency during compound crises.

No agreement after 2 rounds of discussion. Final vote: 20: 3, 0: 3

Strongest Arguments

• 0: When you multiply the sequential low probabilities of an electoral breakthrough, institutional capture, and the neutralization of the EU, the actual chance is roughly 0.2%; rounding that to 20% is mathematically absurd.
• 20: France has a unique history of abrupt constitutional ruptures (1848, 1870, 1940, 1958), suggesting that during extreme stress, the leap from populist governance to a scholar-defined fascist state can happen faster than legal safeguards suggest.

Key Turning Points

• DeepSeek V3.2 abandoned Option B for Option A after being convinced by Claude Opus 4.6's argument that 20% (a 1-in-5 chance) is an enormous overestimate for a total systemic collapse.
• Gemini 3.1 Pro issued a sharp mathematical challenge to the 'B' voters, urging them to reconsider the implications of suggesting a fascist takeover is a routine tail-risk.