Turkey returns to polls for presidential election run-off

Voters in Turkey were returning to the polls on Sunday for the second run-off election for president (Khalil Hamra/AP)

Voters in Turkey were returning to the polls on Sunday for the second run-off election for president.

President Recep Tayyip Erdogan, who has been in power for 20 years, is tipped to secure another five-year term after finishing just short of an outright victory in the first round.