Hunch. As of 26 October Ana Brnabić, an ally of the side that lost, had not named a date, and she must announce the vote by 27 November for it to take place in time.
The election market resolves on the website of Serbia's election commission (RIK): YES if voting in the first round for president takes place in Serbia by the end of 27 December 2026, Belgrade time, and NO if it has not, even if a later date is already set. A second round is not needed, and BBC News and Al Jazeera settle it together if the RIK website does not open.
We looked for cases where a head of state chosen directly by voters left office early, or a term ended with no one elected, and the country had to hold a new vote. We count the vote as on time if the first round came within 90 days, about the three months Serbia has now. We found six such early votes since 1999, two of them in Serbia. In four, a leader of parliament stood in as head of state.