Voters in Turkey are heading back to the polls to determine whether the country’s longtime leader stretches his increasingly authoritarian rule into a third decade or is unseated by a challenger who is promising to restore a more democratic society.

President Recep Tayyip Erdogan has ruled Turkey for 20 years.

After narrowly missing an outright victory in the first round on May 14, he is favoured to earn a fresh five-year term in the second round runoff.

The polarizing populist, who turned his country into a geopolitical heavyweight, finished four percentage points ahead of Kemal Kilicdaroglu, the candidate of a six-party alliance.