The last hours of Turkey's presidential race have turned increasingly sour as Recep Tayyip Erdogan bids to extend his 20 years in power by five more,
BBC reports.
Ahead of Sunday's run-off vote, opposition rival Kemal Kilicdaroglu has courted nationalist votes by vowing to expel millions of Syrian refugees.
The president accused him of hate speech - and said a Kilicdaroglu victory would be a win for terrorists.
The opposition candidate trailed in the first round by 2.5 million votes.
The president is favourite, but his rival believes the margin could still be bridged - either by the 2.8 million supporters of an ultranationalist candidate who came third or by the eight million voters who did not turn out in the first round.
For four hours this week Mr Kilicdaroglu took audience questions on a YouTube channel called BaBaLa TV. The broadcast has reached 24 million views by the latest count and Turkey has a population of 85 million.
