Polls have opened in Turkey’s presidential runoff as President Recep Tayyip Erdogan fights for a historic third term on Sunday.

Erdogan is going head-to-head with opposition leader Kemal Kilicdaroglu, a 74-year-old bureaucrat and leader of the left-leaning CHP. In the first round of voting on May 14, Erdogan secured a nearly five-point lead over Kilicdaroglu but fell short of the 50% threshold needed to win.