Greek elections: 3 parties vie for top post

Leader of the Greek Socialist PASOK party Evangelos Venizelos casts his ballot inside a polling station in Thessaloniki, northern Greece Sunday May 6, 2012. Greeks cast ballots on Sunday in their most critical _ and uncertain _ election in decades, with voters set to punish the two main parties that are being held responsible for the country's dire economic straits. (AP Photo/Nikolas Giakoumidis)

ATHENS, Greece - An exit poll commissioned by Greek media shows three parties are vying for the top spot in the country's critical parliamentary elections, with no definitive front-runner and none gaining enough votes to form a government.

According to the exit poll, the conservative New Democracy party will get between 17 per cent and 20 per cent; the formerly majority socialist PASOK between 14 per cent and 17 per cent, and the left-wing Radical Left Coalition, or Syriza, between 15.5 per cent and 18.5 per cent.

The results all fell within the margin of error.

The extreme right-wing Golden Dawn is projected to win enough votes to enter parliament, with between 6 per cent and 8 per cent, well above the necessary 3 per cent threshold.

Official results are expected later Sunday night.