Millions of Turks began voting in the country’s first-ever presidential runoff election on Sunday at 8 a.m. local time (0500 GMT).
Over 64.1 million individuals are registered to vote, with over 1.92 million already voting from abroad polling sites.
In the country, 191,885 voting boxes have been put up for voters.
Voters will pick between re-election candidate President Recep Tayyip Erdogan and key opposition contender Kemal Kilicdaroglu.
Voting from abroad was allowed till May 24. Voters will be allowed to cast ballots at customs gates until domestic polling booths close at 5 p.m. local time (1400GMT) on Sunday.
On May 14, millions of people went to the polls to choose the country’s president and members of its 600-seat parliament.
In parliament, Erdogan’s People’s Alliance defeated the opposition’s six-party Nation alliance.
However, the presidential contest will be determined in Sunday’s runoff because no contender received the requisite 50% in the first round, despite Erdogan’s advantage.