An electoral official gives a stamp to a voter at a polling station to vote in the referendum on expanding the powers of the Turkish president on April 16, 2017 in Ankara. 
The first polling stations opened in Turkey's tightly contested referendum on expanding the powers of President Recep Tayyip Erdogan, seen as a crossroads in the modern history of the country. 	 / AFP PHOTO / ADEM ALTAN        (Photo credit should read ADEM ALTAN/AFP/Getty Images)