New Delhi, Dec. 28 -- Voters in Kosovo will cast their ballots in a second election this year in a bid to resolve a political deadlock that has threatened to push the small Balkan nation into a prolonged crisis.

The snap parliamentary vote on Sunday was scheduled after Prime Minister Albin Kurti's Self-Determination party failed to form a government despite winning the most votes at a Feb. 9 ballot.

The monthslong stalemate marked the first time that Kosovo could not form a government since it declared independence from Serbia in 2008 following a 1998-99 war that ended in a NATO intervention.

Kurti's party is again the favorite ahead of Sunday's ballot, but it is unclear whether it will manage to muster a majority in the 120-member par...