Turkey: Erdogan's Referendum Victory Delivers 'Presidential System' [April 20, 2017] [open pdf - 447KB]
"Based on unofficial results released by Turkish officials, constitutional changes to establish a 'presidential system' in Turkey appear to have been adopted via a 51.4% favorable vote in an April 16, 2017, nationwide referendum. President Recep Tayyip Erdogan and the ruling Justice and Development Party (AKP) had campaigned vigorously in support of the changes after obtaining the requisite parliamentary approval with the support of the Nationalist Action Party (MHP) in January 2017. Assuming the outcome holds despite some allegations of irregularities, most of the changes-including the abolition of the office of prime minister-would take effect after Turkey's next presidential and parliamentary elections, which would be scheduled for November 2019."
CRS Insight, IN10691
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html