Former Greek Prime Minister Kyriakos Mitsotakis is expected to win the upcoming repeat election on Sunday, according to polls.
Mitsotakis's New Democracy party won in May, 20 points clear of the leftist Syriza party that ruled Greece from 2015 to 2019, but fell just short of the outright majority needed to govern without forming a coalition, prompting the second vote.
Opinion polls conducted since then show New Democracy (ND) widening its lead further ahead of Sunday's vote.
A poll conducted by the RASS polling agency published on June 19 put ND at 42.9% versus 17.9% for Syriza and showed it winning a comfortable 166-seat majority in the 300-seat parliament.
The Socialist PASOK party ranked third with 12.3%.
Opinion polls suggest that up to seven parties could enter parliament, including the leftist Plefsi Eleftherias, founded by former Syriza lawmaker Zoe Konstantopoulou, and a newly set up far-right party called Spartans.
Sunday's election is being held in the shadow of a migrant shipwreck on June 14, in which hundreds of people are feared to have perished. One of the worst migrant disasters in years has shown the parties' divisions over migration.
Opinion polls show New Democracy with more than 40% of the vote, with Syriza, headed by Alexis Tsipras, trailing at about 20%. Mitsotakis, prime minister since 2019, stepped down in favor of a caretaker prime minister following the inconclusive May vote as required by the constitution.
Analysts said a row over who was to blame for the shipwreck likely slightly boosted Mitsotakis, who tore into his archrival Tsipras for suggesting Greece didn't do all it could to prevent the disaster.
"(The debate) has helped New Democracy because Syriza's first, instinctive reaction was to voice doubts over the coast guard (and its handling), while New Democracy appeared to be protecting the borders," said Apostolos Pistolas, a voting behavior analyst.
Rescuers found 104 survivors, but up to 750 people were thought to have been packed on the ramshackle vessel that had sailed from Libya and was heading to Italy. The boat had been shadowed by the Greek coast guard before it sank: the coast guard has said that the occupants refused all offers of help.
Mitsotakis, whose administration has taken a hard stance on migration, said "wretched traffickers" were to blame for the disaster and praised the coast guard for rescuing people.
Tsipras has questioned why the coast guard did not intervene earlier. Under the previous Syriza administration, more than one million refugees and migrants reached Greek islands as they tried to come to Europe in 2015 and 2016.
The disaster sidelined other issues in the run-up to the election, including a cost of living crisis and a deadly rail crash in February that exposed shortcomings in the public transport system.
Repeat vote, different rules
Sunday's vote takes place with different rules to the May election – the front-runner wins bonus seats in the 300-member parliament, allowing it an absolute majority.
Behind the more prominent names are several smaller parties, including MeRA25, headlined by Yanis Varoufakis, a former finance minister noted for unconventional tactics at the peak of Greece's debt crisis a decade ago.
Leftist Zoe Konstantopoulou, another veteran of Greece's turmoil remembered for making hours-long speeches ripping into Greece's lenders while the speaker of parliament, is also seeking a seat.
Also running are the Spartans, named after the formidable warriors of Sparta in ancient Greece, who say the country is threatened by uncontrolled migration.
The nationalist group was catapulted from relative obscurity after support from Ilias Kasidiaris, frontman of the now-banned Golden Dawn far-right party. He is currently in jail.