Serbia's President Aleksandar Vučić resigned on Sunday, Sept. 27, after nearly two years of student-led protests and public anger over alleged government corruption and corner-cutting. He will run for prime minister as the Serbian Progressive Party's candidate in snap parliamentary elections scheduled for Oct. 25. Parliament Speaker Ana Brnabić will serve as interim president until a successor is elected. Under Serbia's constitution, a presidential election must be held within three months of Vučić's resignation, meaning voters will go to the polls twice before the end of the year. The unrest intensified after the 2024 collapse of the Novi Sad railway station roof killed 16 people, followed by accusations of police brutality and demands for parliamentary elections. Vučić, who cannot seek a third presidential term, has remained a central figure in Serbian politics while pursuing European Union membership, close ties with Russia and Chinese investment.