Turkish president Erdogan casts his vote

Turkish President Recep Tayyip Erdogan on Sunday said the tightly-contested referendum on expanding the powers of the head of state was a vote for the future of Turkey.

"We carried out some referendums (in the past) but this referendum is a choice of change and transformation for a new administrative system in the Turkish Republic," he told reporters after casting his vote in an Istanbul school.

'This evening our people will walk to the future by making the expected choice' 

- President Erdogan 

"God willing, this evening our people will walk to the future by making the expected choice."

Erdogan cast his vote in Uskudar on the Asian side of Istanbul, with his wife Emine, his grandchildren, elder daughter Esra and son-in-law Berat Albayrak, the energy minister.