President Recep Tayyip Erdogan is looking to supplant the parliamentary framework with an official administration.
Endorsement could see him remain in office until 2029.
Supporters say a “yes” vote would streamline and modernize the nation; rivals fear the move would prompt progressively dictator run the show.
In the event that the choice vote falls in Mr Erdogan’s support, it would give him tremendously improved forces to delegate bureau priests, issue orders, pick senior judges and disintegrate parliament.
The battle, which has enraptured the nation, could realize the greatest change to the administering framework since the cutting edge republic was established right around a century back.
It happens under a highly sensitive situation which was forced after a fizzled overthrow last July. An administration crackdown from that point forward has seen a huge number of individuals captured.
President Erdogan told supporters at one of his last arouses on Saturday in Istanbul’s Tuzla area: “The new constitution will bring solidness and trust that is required for our nation to create and develop. Turkey can jump into what’s to come.”
Mr Erdogan expected the administration, a to a great extent stylized position, in 2014 after over 10 years as executive.
The submission on sacred change would nullify the post of PM, permitting the president to bring all state organization under his control.
The president says the new framework will take after those in France and the US and will acquire quiet a period of turmoil set apart by a Kurdish revolt, Islamist militancy and strife in neighboring Syria that has prompted a gigantic outcast convergence.
What’s in the new constitution?
The president would have the capacity to specifically choose beat open authorities, including pastors
He would likewise have the capacity to allocate one or a few VPs
The employment of PM, at present held by Binali Yildirim, would be rejected
The president would have energy to mediate in the legal, which Mr Erdogan has blamed for being affected by Fethullah Gulen, the Pennsylvania-based evangelist he faults for the July 2016 overthrow against him
The president would choose whether or not force a highly sensitive situation
Commentators fear the change would put excessively control in the president’s grip, adding up to one-man administer, without the balanced governance of other presidential frameworks.
They say his capacity to hold binds to a political gathering – Mr Erdogan could continue initiative of the AK Party (AKP) he helped to establish – would end any possibility of presidential unprejudiced nature.
Kemal Kilicdaroglu, pioneer of the primary resistance Republican People’s Party (CHP), told a rally in Ankara that a “yes” vote would imperil the entire nation.
“We will put 80 million individuals on to a transport… we don’t know where it is going. We are putting 80 million on a transport without any brakes,” he said.
The choice has a basic “yes” or “no” decision on whether to support parliament’s endorsement of another draft constitution.
The draft expresses that the following presidential and parliamentary races will be hung on 3 November 2019.
The president would have a five-year residency, for a most extreme of two terms.
Battling on the submission closed at 18:00 nearby time (15:00 GMT) on Saturday, with voting due to get going in the nation’s east at 07:00 neighborhood time (04:00 GMT) on Sunday and after a hour somewhere else.
Somewhere in the range of 55 million individuals are qualified to vote crosswise over 167,000 surveying stations.
Results are normal late on Sunday evening.