The leader of the Greek radical left has confirmed that it will cancel the international rescue plan if Syriza wins the country’s repeat general election later this month.
Alexis Tsipras also promised to reverse pay and pension cuts, and to nationalise Greek banks.
Coalition talks collapsed after the last, inconclusive, election which was won by the conservative New Democracy party with Syriza a close second.
Latest polls are contradictory. One gives New Democracy a narrow lead. Another puts the left-wingers six points ahead.
Tsipras said cancelling the current austerity programme, which includes deep spending cuts and stiff tax rises, would be his government’s first act, but he wants Greece to stay in the euro.
EU leaders threatened to end new funding should the bailout be ditched, a move that could rapidly push the debt-strapped country into bankruptcy.