Voters in Turkey returned to the polls on Sunday for a historic presidential runoff election that could determine the future course of the nation. President Recep Tayyip Erdogan, who has been in power for two decades, is expected to secure a new five-year term, despite facing criticism for his increasingly authoritarian rule and handling of economic challenges and a recent earthquake. Erdogan's opponent, Kemal Kilicdaroglu, the candidate of a six-party alliance and leader of Turkey's center-left main opposition party, has promised to restore democratic values and improve relations with the West.