For Saakashvili, it's a bitter departure. The vote is expected to cement the control of his rival, billionaire Prime Minister Bidzina Ivanishvili, whose coalition routed Saakashvili's party in a parliamentary election a year ago.
Ivanishvili's chosen candidate, Georgi Margvelashvili, a former university rector with little political experience, is expected to win today's election. But much uncertainty remains.
Ivanishvili has promised to step down next month and nominate a new prime minister, who under Georgia's new parliamentary system will acquire many of the powers previously held by the president.
Much uncertainty also hangs over the future of Saakashvili. Since last year's election and what was in effect a transfer of power, dozens of people from Saakashvili's team, including several former government ministers, have been hit with criminal charges and some have been jailed, including the former prime minister.
In today's election, Saakashvili's party needs its candidate, former parliamentary speaker David Bakradze, to finish a strong second among the 23 candidates to maintain political influence.
While Ivanishvili made his money in Russia and has had some success in restoring trade ties with Georgia's hostile neighbor, he has maintained the pro-Western course set by Saakashvili.
"Nobody can change this. This is the will of the Georgian people, to see their country in the EU and in NATO," said Alexi Petriashvili, one of Ivanishvili's ministers. "The majority see the US as Georgia's strongest strategic partner."
The US supports Georgia diplomatically and financially, with assistance in 2013 totaling about USD 70 million.
