LIVE: 'YES' votes 51.3 pct, 'NO' votes 48.7 pct in Turkey's referendum on executive presidency

8:50 p.m. - The Kurdish issue-focused Peoples' Democratic Party (HDP) issued a statement on Twitter, saying they would oppose two thirds of the polls whether the results are "yes" or "no." According to data gathered by them there was 3 to 4 percent manipulation, the party said in its statement.  

8:41 p.m. - Nationalist Movement Party (MHP) leader called referendum results a very significant success.

8:23 p.m. - President Recep Tayyip Erdoğan congratulated the referendum results and spoke over the phone with Prime Minister Binali Yıldırım and opposition Nationalist Movement Party (MHP) leader Devlet Bahçeli, according to Presidential Office officials.

8:20 p.m. - CHP deputy leader Erdal Aksünger said the party would appeal 37 of the ballot boxes in terms of content.

7:50 p.m. - Prime Minister Binali Yıldırım will deliver a speech at 9:00 p.m., according to the PM's office.

7:39 p.m. - Istanbul's Taksim Square closed to traffic due to security measures, Doğan News Agency has reported. 
 7:36 p.m. -  The 'yes' votes for the country's key referendum on shifting the governance system to an executive presidency are ahead of the 'no' votes, according to initial results.

Percentage of ballot boxes opened: 95.0

YES: 51.7

NO: 48.63

7:30 p.m. - Fewer votes have been counted in Istanbul than are being reported by state-run Anadolu Agency, main opposition Republican People's Party (CHP) deputy leader Erdal Aksünger has said, adding that the real number of opened ballot boxes was just 57 percent.
 
Anadolu said the "yes"...