10:21 GMT - Turkish press view - The vote is taking place in the middle of the holiday season and there are big questions as to whether the turnout will match the high levels of the local elections in March.
The morning's press showed a predictable divergence of opinions.
"A vote on the regime!" said the staunchly secular daily Cumhurriyet. Sabah, strongly pro-Erdogan, declaimed however: "Here is the democracy! A day of honour for Turkey."
10:16 GMT - Erdogan widely promoted - Turkish PM Erdogan's campaign for the presidency has been well funded and his images are ubiquitous, drawing criticism from the other two candidates.
Erdogan is expected to cast his vote in the conservative Istanbul district of of Uskudar later in the afternoon.
10:08 GMT - Ihsanoglu votes - Main opposition presidential candidate Ekmeleddin Ihsanoglu casts his ballot.
10:04 GMT - Two candidates vote - Two of the three candidates for the post of Turkish president have already voted, with only the favourite Prime Minister Recep Tayyip Erdogan yet to cast his ballot.
Casting his vote in Istanbul, the main opposition candidate Ekmeleddin Ihsanoglu denounced what he said was an "unfair" and "disproportionate" campaign but said he could still defeat Erdogan -- despite polls showing he is due to come far behind.
Kurdish challenger Selahattin Demirtas, whose campaign has appeared more energetic than that of Ihsanoglu, meanwhile voted in Turkey's main Kurdish city of Diyarbakir. "Today is a beginning. It is a beginning for all those oppressed, marginalised," he declared.
10:00 GMT - AFP TURKISH PRESIDENTIAL ELECTION LIVEREPORT OPEN - Welcome to AFP's livereport on Turkey's first ever presidential election