Unofficial vote tallies by the Turkish media showed Erdogan won about 51.9 per cent in Sunday's election, with his main challenger Ekmeleddin Ihsanoglu following with 38.3 per cent.
Selahattin Demirtas, a young Kurdish politician running on a left-wing platform, was in third place with 9.7 per cent. The election commission was expected to issue official vote figures today.
In his victory speech last night, Erdogan struck a conciliatory tone toward critics who fear he is bent on a power grab as he embarks on another five years at the country's helm. Erdogan has already served three terms as prime minister.
"I will not be the president of only those who voted for me. I will be the president of 77 million," he said, in stark contrast to his mostly bitter, divisive election campaign.
Erdogan, who has dominated Turkish politics for more than a decade, has vowed to transform the presidency from a largely ceremonial post into a powerful position.
Whoever replaces Erdogan as prime minister would hold the position ostensibly until next year, when a general election is scheduled. Many believe Erdogan will appoint a pliant premier and retain true power for himself.
