Greece Election Poll: Results from Opinion on May 21, 2025

According to Marc, 6 parties are projected to surpass the electoral threshold and enter the Hellenic Parliament: Nea Dimokratia with 123 representatives, SYRIZA with 98 representatives, PASOK with 33 representatives, Kommounistikó with 22 representatives, Ellinikí Lýsi with 12 representatives and MeRA25 with 12 representatives.

The Greek Parliament, known as the Vouli ton Ellinon, comprises 300 members elected for a four-year term. Greece employs a reinforced proportional representation system. This system allocates most seats proportionally but grants the strongest party a seat bonus under specific conditions. Designed to be degressive, this bonus aids the winning party in securing an absolute majority of seats, fostering stable single-party governments. Voters cast ballots for party lists, yet they can influence which candidates fill the party's mandates by marking preference crosses next to names.

To enter the Greek Parliament, a political party must clear a nationwide electoral threshold of 3% of valid votes. This hurdle applies to both individual parties and party alliances. Parties failing to meet this threshold are excluded from seat allocation. Votes cast for parties below the 3% threshold are proportionally redistributed among qualified parties, further facilitating the formation of parliamentary majorities.

Government formation in Greece prioritizes stability. The President of the Republic grants the leader of the party with the most seats the mandate to form a government. Thanks to the bonus system, single-party rule is more common in Greece than in other European nations. If seats fall short of an absolute majority (151 out of 300), exploratory mandates are extended to the second and third strongest parties to assess coalition prospects. Should all attempts fail, new elections are called, often under an electoral system designed to favor majority formation.