Turkey referendum: Erdoğan wins vote amid dispute over ballots – as it happened

We’re wrapping up our live coverage of the Turkish referendum - for more read Kareem Shaheen’s full wrap here.

• Unofficial results show Turkish voters have handed President Erdoğan sweeping new powers.
  
• The yes campaign won 1.25 million more votes than the no campaign, with about 600,000 votes still to be counted.
• The yes vote had about 51.3% compared with 48.7% for the no vote, the state-run Anadolu news agency reported. Turnout exceeded 80%.
  
• The three largest cities – Istanbul, Ankara and Izmir – voted against the changes.
• The main opposition Republican People’s party (CHP) plans to challenge more than a third of the ballot boxes and accused Anadolu of publishing inaccurate results.

President Erdoğan will chair a cabinet meeting at the presidential palace in Ankara on Monday, CNN Turk reports.

Turkey should seek the “broadest possible national consensus” in its constitutional amendments given the narrow win for the yes campaign, the European Commission has said.

Unofficial results showed that 51.3% of Turks approved changes to their constitution in the referendum, handing President Erdoğan sweeping new powers.

“In view of the close referendum result and the far-reaching implications of the constitutional amendments, we also call on the Turkish authorities to seek the broadest possible national consensus in their implementation,” the commission said.

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Unofficial results show that Turks have approved changes to their constitution, handing President Erdoğan sweeping new powers in Sunday’s referendum, the head of the country’s high electoral board (YSK) has said.

The yes campaign won 1.25 million more votes than the no campaign and with only about 600,000 votes still to be counted that meant the changes had been approved, YSK chairman Sadi Güven told a news conference in Ankara.

He said the YSK had decided to consider unstamped ballots as valid unless they were proved to be fraudulent, after a high number of complaints – including one from the ruling AK Party – that its officials had failed to stamp some ballot papers.

The no campaign said the last-minute decision raises questions about the validity of the vote. But Güven said the decision was taken before results were entered into the system, and that members of the AKP and the main opposition were present at almost all polling stations and signed off on reports.

Güven said official results were expected in 11 or 12 days.

The head of Turkey’s electoral board is defending the decision to accept as valid ballots without official stamps.

The Irish Times journalist Stephen Starr tweets from Istanbul:

He adds that the legitimacy of the referendum is open to debate, including legal argument, and that there cannot be consensus about the change to the constitution.

The head of the main opposition party says the referendum has taken place in “unfair circumstances” and that those on the yes side have gone beyond legal limits.

BBC journalist Selin Girit tweets: