Erdogan credited with more than 50 percent of the ballots counted, according to Anadolu Agency. A result immediately contested by his opponent for the presidency, Kemal Kiliçdaroglu, boss of the CHP.

"We are in the lead," he said on Twitter. Third candidate Sinan Ogan, a dissident from the nationalist MHP party, is expected to be around 5% of the vote. The channel close to CHP Halk TV broadcast Sunday night figures giving a slight lead to Kiliçadaroglu.