Millions of Turkish citizens will cast their ballots today in a referendum which could usher in the most radical change to the country's political system in modern history.
On the eve of the vote, President Recep Tayyip Erdogan spoke at four political rallies in one day to ensure his voters turned out.
He reserved a large amount of time in his last speech ripping into the European project as "sick and deviant".
Speaking to thousands of devoted supporters hours before the polls opened, the leader branded the European Union as an outdated model doomed to fail.
Millions of Turkish citizens are going to ballots today in a vote
He took the European Union elite to task over their stringent Copenhagen Criteria, which has held up accession talks with Turkey.
President Erdogan warned last month that he may decide to hold a referendum on whether to continue Turkey’s negotiations with the bloc.
The outspoken leader has branded EU leaders as "Nazis" and "Islamophobes", and even threatened to rip up the country's refugee agreement with Europe after today's vote.
Opinion polls going into the referendum handed a narrow lead for the leader's "Yes" vote, which would place sweeping new powers in the hands of the president
If the 'Yes' vote prevails, President Erodgan could feasibly wield power until at least 2029.
President Erdogan spent his last speech laying into the European project as "sick and deviant"
Get Quotes on Home Insurance
April 16 will be a turning point for Turkey's political history
President Tayyip Erdogan
He told the cheering crowd: "April 16 will be a turning point for Turkey's political history.
"Every vote you cast tomorrow will be a cornerstone of our revival.
"There are only hours left now. Call all your friends, family members, acquaintances, and head to the polls."
The referendum has divided the country, with President Erdogan insisting that more powers are needed to take on the threat of terrorism.
But, European leaders and domestic opponents criticise the move as a step toward greater authoritarianism, following a harsh crackdown following the failed July coup.
The leader branded the European Union as an outdated model doomed to fail
President Recep Tayyip Erdoğan threatened to make Europe pay for “oppressing” Turks
The Turkish leader told the crowd yesterday that once he gains more power, he will steer the country to greatness.
He added that Europe will pay for "oppressing and humiliating" Turks across the world.
Critics claim that the leader has received a disproportionately large percentage of media coverage during the referendum campaign.