The ruling PASOK party leads the main opposition New Democracy (ND) party by 5.1 percent, according to a GPO poll presented at midnight on Monday by the Mega Channel's "Anatropi" programme.

According to the poll, PASOK garners 25.2 percent, ND 20.1, the Communist Party of Greece (KKE) 8.5, the Popular Orthodox Rally (LAOS) 6.2, the Radical Left Coalition (SYRIZA) and the Democratic Alliance 2.9, the Ecologists Greens 2.6 and the Democratic Left 2.45.

The abstention rate reaches 13.5 percent, while the undecided account for 9.1.

As to the question of who is most suitable to be prime minister, George Papandreou receives 37.8 percent of the respondents' preferences and Antonis Samaras 23 percent, while the reply neither receives 39.2.