Cars drive past posters for presidential candidates Turkey's President and ruling Justice and Development Party, or AKP, leader Recep Tayyip Erdogan, left, and Meral Aksener, the presidential candidate of nationalist opposition Iyi (Good) Party in Ankara, Turkey, on June 24, 2018. Ali Unal / AP Photo
A woman casts her ballot at a polling station in Ankara, Turkey, on June 24, 2018. Burhan Ozbilici / AP Photo
A man casts his ballot for Turkey's presidential and parliamentary elections at a polling station in Ankara, Turkey, on June 24, 2018. Stoyan Nenov / Reuters
A woman picks up a ballot at a polling station in Istanbul, Turkey, on June 24, 2018. Yasin Akgul / AFP
A woman casts her ballot for Turkey's elections at a polling station in the mainly-Kurdish city of Diyarbakir, Turkey, on June 24, 2018. Emre Tazegul / AP Photo
People arrive at a polling station in Yalova, Turkey, on June 24, 2018. Osman Orsal / Reuters
Turkish people cast their vote for the presidential and parliamentary elections in Istanbul, Turkey, on June 24, 2018. Srdjan Suki / EPA
People wait in queue to cast their ballots at a polling station in Yalova, Turkey, on June 24, 2018. Burak Kara / Getty Images
People wait to vote during Turkey's presidential and parliamentary elections at a polling station in Istanbul, Turkey, on June 24, 2018. Alkis Konstantinidis / Reuters
Presidential candidates are seen on a ballot paper as people start casting their votes at a polling station in Ankara, Turkey, on June 24, 2018. Mustafa Kirazli / Getty Images
People wait to vote in Turkey's elections at a polling station in the mainly-Kurdish city of Diyarbakir, Turkey, on June 24, 2018. Emre Tazegul / AP Photo
A voter leaves a booth with ballot papers at a polling station at a primary school in Ankara, Turkey, on June 24, 2018. Burhan Ozbilici / AP Photo
Cars drive past posters for presidential candidates Turkey's President and ruling Justice and Development Party, or AKP, leader Recep Tayyip Erdogan, left, and Meral Aksener, the presidential candidate of nationalist opposition Iyi (Good) Party in Ankara, Turkey, on June 24, 2018. Ali Unal / AP Photo
A woman casts her ballot at a polling station in Ankara, Turkey, on June 24, 2018. Burhan Ozbilici / AP Photo
A man casts his ballot for Turkey's presidential and parliamentary elections at a polling station in Ankara, Turkey, on June 24, 2018. Stoyan Nenov / Reuters
A woman picks up a ballot at a polling station in Istanbul, Turkey, on June 24, 2018. Yasin Akgul / AFP
A woman casts her ballot for Turkey's elections at a polling station in the mainly-Kurdish city of Diyarbakir, Turkey, on June 24, 2018. Emre Tazegul / AP Photo
People arrive at a polling station in Yalova, Turkey, on June 24, 2018. Osman Orsal / Reuters
Turkish people cast their vote for the presidential and parliamentary elections in Istanbul, Turkey, on June 24, 2018. Srdjan Suki / EPA
People wait in queue to cast their ballots at a polling station in Yalova, Turkey, on June 24, 2018. Burak Kara / Getty Images
People wait to vote during Turkey's presidential and parliamentary elections at a polling station in Istanbul, Turkey, on June 24, 2018. Alkis Konstantinidis / Reuters
Presidential candidates are seen on a ballot paper as people start casting their votes at a polling station in Ankara, Turkey, on June 24, 2018. Mustafa Kirazli / Getty Images
People wait to vote in Turkey's elections at a polling station in the mainly-Kurdish city of Diyarbakir, Turkey, on June 24, 2018. Emre Tazegul / AP Photo
A voter leaves a booth with ballot papers at a polling station at a primary school in Ankara, Turkey, on June 24, 2018. Burhan Ozbilici / AP Photo
Cars drive past posters for presidential candidates Turkey's President and ruling Justice and Development Party, or AKP, leader Recep Tayyip Erdogan, left, and Meral Aksener, the presidential candidate of nationalist opposition Iyi (Good) Party in Ankara, Turkey, on June 24, 2018. Ali Unal / AP Photo