Voting begins in Turkey as Erdogan aims to remain in power
The constitutional changes proposed in Sunday’s vote could significantly expand the powers of the country’s top office.
Supporters say a ‘Yes’ vote would streamline and modernise the country, but opponents fear it could lead to greater authoritarianism in the country.
A vote in favour of the radical changes would also see President Recep Tayyip Erdogan remain in office until 2029.
Around 55 million people are eligible to vote across 167,000 polling stations.
Polling stations opened in eastern Turkey at 7am local time (4am BST), with voting in the rest of the country starting at 8am local time (5am BST). Polls will close at 4pm (1pm BST) in the east, and 5pm (2pm BST) everywhere else.
Results are expected to be announced late on Sunday evening.
President Erdogan addressed his supporters in Istanbul on Saturday night, for a final time ahead of voting, calling on citizens to vote in favour of the constitutional changes.
He said: "[The new system] will strengthen the stable and secure environment our country needs to develop.”
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