Greeks were voting Sunday in an early general election that could alter the course of the country's struggle with crippling debts, with a radical left party poised to win by promising to rewrite the terms of its international bailout.
The Syriza party led by
But those polls also have shown that a significant portion of voters remained undecided until the last minute, and suggest that Syriza might struggle to win enough parliamentary seats to form a government on its own.
"These elections are crucial for our future and for the future of our children," Samaras said after he cast his ballot in a southern Greek town. "Today we decide whether we will go forward with strength, with security, with assuredness, or whether we will head into adventures."
Samaras said he was optimistic given what he called the "unprecedented large number" of undecided voters. He said they would determine the outcome.
Syriza has promised to renegotiate the country's 240 billion euro ($270 billion) international bailout deal. It has pledged to reverse many of the reforms that international creditors demanded in exchange for keeping Greece financially afloat since 2010.
The anti-bailout rhetoric has renewed doubts over Greece's ability to emerge from its financial crisis that has seen a quarter of its economy wiped out, sent unemployment soaring and undermined the euro, the currency shared by 19 European countries.
Greece's creditors insist the country must abide by previous commitments to continue receiving support, and investors and markets alike have been spooked by the anti-bailout rhetoric. Greece could face bankruptcy if a solution is not found, although speculation of a "Grexit" — Greece leaving the euro — and a potential collapse of the currency has been far less fraught than during the last general election in 2012.
Samaras' campaign focused on the improving economy, which grew for the first time in six years in the third quarter of 2014. He has promised to reduce taxes if re-elected and has warned of the potentially dire consequences of reneging on bailout conditions. Opponents accused him of using fear tactics.
Syriza's promises to end Greece's era of crushing austerity have attracted many voters infuriated by the deterioration in their standard of living and ever-increasing tax bills.
The big question is whether any party will win the required 151 seats in the 300-member parliament to form a government on its own. The Greek political scene has fractured during the financial crisis, with voters abandoning the two formerly dominant parties — the conservatives and the socialists — in favor of a smattering of smaller parties.
Mara Ramou, an official at one Athens polling center, said she hoped the vote would produce a stable government without the need for a second contest, as happened in 2012.
"I hope the votes will express what people truly want and believe, so that things change for us," she said, adding her concern that social and financial pressures would not "get worse in Greece than what they already are, because austerity and the crisis touch all levels of society."