What changes under Turkey's new constitution plan

Turkey on Sunday votes in a landmark referendum on a new constitution that would grant President Recep Tayyip Erdogan expanded powers.While critics say the move is part of a grab by Erdogan for one-man rule, supporters say it will simply put Turkey in line with France and the United States and is needed for efficient government.The current constitution was adopted in 1982 after the 1980 military coup.