The UN Secretary-General selection remains highly competitive and uncertain, with Security Council straw polls showing no decisive frontrunner after three rounds as of mid-September 2026. Rebeca Grynspan and Carolyn Rodrigues-Birkett lead official candidates with the most “encourage” votes, while others like Rafael Grossi trail amid P5 geopolitical tensions, regional rotation preferences, and calls for the first woman in the role. Recent withdrawals, such as Michelle Bachelet’s, and the opaque veto dynamics have kept probabilities fragmented. Trader consensus on Polymarket spreads support across both established diplomats and outsiders like Colombe Cahen-Salvador and Achim Steiner, reflecting skepticism about the formal process and potential for late developments or compromise picks before a General Assembly recommendation later this year.