“The opposition candidate for mayor of Istanbul celebrated a landmark win Sunday in a closely watched repeat election that ended weeks of political tension and broke the long hold President Recep Tayyip Erdogan’s party had on leading Turkey’s largest city,” the AP reports.

“The governing party’s candidate, former Turkish Prime Minister Binali Yildirim, conceded moments after returns showed him trailing well behind Imamoglu, 54% to 45%. Imamoglu increased his lead from a March mayoral election by hundreds of thousands of votes.”