The polls for the main five TV stations showed Tsipras' party Syriza picking up between 30 and 34 per cent of the vote compared to between 28 to 32.5 per cent for New Democracy, led by Vangelis Meimarakis.
In the race for third place, the neo-Nazi Golden Dawn party is forecast to pick up between 6.5 and 8.0 percent of the vote, followed by socialists Pasok with 5.5 to 7.0 percent.
Over 9.8 million Greeks were registered to vote for a new government which, whoever wins, will face the tough task of pushing through painful new tax rises and pension reforms agreed under a three-year bailout deal adopted across-the-board by parliament last month.