Will the Iranian regime fall by September 30?

Platform comparison

Market context

The Islamic Republic of Iran faces a severe legitimacy crisis following the assassination of Supreme Leader Ali Khamenei in late February 2026 and the subsequent US–Israeli military campaign, yet the crowd-implied 3% probability of regime collapse by September reflects the entrenched power of the IRGC. Historical precedents from the 1979 revolution and the 2011 Arab Spring suggest that while economic collapse and external decapitation can shatter a regime’s aura, loyalist military cadres often seize the vacuum to enforce order through brute force rather than surrender power. In Iran’s case, the IRGC has already demonstrated its capacity to fill leadership gaps with pre-named successors, using internet blackouts and mass arrests to suppress the uprising that began in December 2025, indicating that structural dissolution remains unlikely without a coordinated internal military defection.

Traders should monitor three critical catalysts: the formalisation of the new Supreme Leader’s authority by mid-August, the potential for Kurdish anti-regime coalitions to declare autonomous governance in western provinces, and any US or Israeli announcements regarding the installation of Mahmoud Ahmadinejad as a transitional figure. Recent reporting from the *New York Times* confirms that regime officials have transferred hundreds of millions of dollars out of Iran, signalling deep intra-elite anxiety about economic stability and regime survival. The market is currently leaning on the IRGC’s ability to maintain de facto control despite external pressure, as no large-scale uprising has materialised weeks into the war, and the government continues to label protesters as foreign agents while tightening security. Without a decisive fracture in the military’s loyalty or a successful foreign-backed transition, the regime’s core structures will likely persist through the settlement window.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Will the Iranian regime fall by September 30? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

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