56 million voters go to the polls to elect the new President and the new Turkish parliament.
A total of 180,000 ballot boxes have been set up, which will open at 8:00 and close at 17:00.
There are six candidates for the presidency:
Erdogan is still leading in the polls, but may need a run-off election.
Security measures have been increased in the area, with the mobilization of more than 38 thousand police officers.
Alpha and AlphaNews.Live are located in Istanbul and bring you minute by minute developments: