TEHRAN — If the prediction exchanges are to be believed, the question of who next occupies the Supreme Leader's chair in Tehran remains, as of this dispatch, anyone's game. Kalshi prices the leading contender at a slender 15%, a figure that speaks less to that candidate's weakness than to the extraordinary impenetrability of the succession process itself. The field, in short, is wide open.

The Supreme Leader of Iran wields authority few heads of state can match — commanding the armed forces, vetoing legislation, and setting the compass of the Islamic Republic's foreign policy. The position, held since 1989 by Ali Khamenei, now in his eighties, carries consequences that reverberate from the Persian Gulf to Washington to Tel Aviv. Yet prediction markets, despite trading over $114,000 in daily volume on the question, can muster no better than one-in-seven odds for any single name — a testament to how thoroughly the Assembly of Experts conducts its deliberations behind closed curtains.

A sudden health crisis forcing an emergency conclave, or a dramatic factional realignment within the clerical establishment, could swiftly concentrate those scattered odds upon one man and send the markets scrambling.