Aleksandar Vučić’s resignation on September 27, 2026, after sustained student-led protests over the 2024 Novi Sad railway disaster and corruption allegations, activated Serbia’s constitutional rule requiring a presidential election within 90 days. Acting President and National Assembly Speaker Ana Brnabić, a Serbian Progressive Party ally, holds authority to call the vote, with the first round required by late December following the October 25 snap parliamentary election. The parliamentary outcome and any new speaker could shape exact timing and candidate fields, while Vučić’s move to seek the prime minister role underscores the interconnected races and the limits of his two-term eligibility. Traders weigh these procedural steps and party positioning against the short resolution window.