LIVE: Turkey votes on whether to expand president's powers

Turkey voted 51.2% in favour of an 18-article constitutional amendments package that will vastly expand the powers of the president. 

The Supreme Election Board (YSK), the body in charge of overseeing all elections and referenda, has not released official results yet.  

"Our nation acted in maturity and went to the polls today. According to unofficial results, 25 mn people voted in favour of the constitutional change. I thank everyone who voted regardless of the colour of their vote. This is a historic decision where people voted for their future. This administrative reform might just be 18 articles but its contents means it is deep-rooted". 

- President Erdogan 

Turkish prime minister Binali Yildirim delivered a victory speech from the balcony of the ruling Justice and Development Party's (AKP) headquarters in Ankara. 

Supporters of TurKish president Recep Tayyip Erdogan have taken to the streets to celebrate the victory of the 'Yes' camp in the referendum on expanding presidential powers in Turkey. 

More than 99% of the ballot boxes have been opened, but electoral staff are still counting the votes.

Supporters of Turkish president Recep Tayyip Erdogan have taken to the streets to celebrate a 'vicotry' in the referendum, despite votes still being counted.

About 51.2% of the votes are 'Yes' with more than 98% of the ballot boxes opened.

Meanwhile, opposition parties of the Republican People's Party (CHP) and the pro-Kurdish Preople's Democratic Party (HDP) have demanded a recount of the votes.

Opposition leaders challenged claimed that 1.5 million votes are invalid.

Turkish president Recep Tayyip Erdogan called prime minister Binali Yildirim and leader of the Nationalist Movement Party (MHP) Devlet Bahceli to congratulate them 

Meanwhile, Erdogan's supporters have taken to the streets across Turkey to celebrate an imminent victory with 51.2% for 'Yes' with more than 99% of the ballot boxes opened. 

Turks have backed President Recep Tayyip Erdogan's call for sweeping new presidential powers, partial official results of a referendum indicate.

With about 99.6% of ballot boxes opened, "Yes" was on about 51.2% and "No" on about 48.7%, according to local media.

Erdogan supporters say replacing the parliamentary system with an executive presidency would modernise the country.

Opponents have attacked a decision to accept unstamped ballot papers as valid unless proven otherwise.

Turkey’s main opposition party CHP, has announced they will be contesting the validity of 60% of the ballots, after unconfirmed reports of large numbers of votes without official stamps.

"Everyone is showing vote count data from (state-run) Anadolu news agency," Bulent Tezcan, Turkish MP from the main opposition People Republican's Party (CHP) told CNN Turk live.

"Opening the ballot boxes and counting the votes are a different matter," he added.

Meanwhile, CHP's Erdal Aksunger said: "Judges are violating the results. I call on everyone not to leave polling booths. we will contest 37 percent of the results."

The 'Yes' camp is set to win with 51.5 percent in favour of constitutional amendments to expand presidential powers, reported Turkish local media. 

With 98 percent of the ballot boxes now open, the 'No' votes have reached 48.5 percent nationwide. 

The number of 'No' votes are ahead across all of Turkey's major cities including Istanbul, Ankara, Izmir and Diyarbakir.

According to local media, the number of 'Yes' votes has dipped to 51.8% with 92 percent of the ballot boxes now opened. 

Analysts have said that a 'No' vote in Istanbul would be a big blow to the ruling Justice and Development Party (AKP).

The number of 'No' votes in Turkey's big cities including Istanbul and Izmir are ahead of the number of 'Yes' votes, reported local media.