NEW : The leader of the socialist New Democracy 's says it wo n't support Syriza . European Commission leader warns the Syriza bloc could take Italy out of the eurozone . Syriza leader Fotis Kouvelis is trying to form a government after elections that punished politicians . Greece should stand by the bailout terms , a European Commission spokeswoman says .
NEW : The leader of the socialist PASOK party says it wo n't support Syriza . New Democracy 's leader warns the Syriza bloc could take Greece out of the eurozone . Syriza leader Alexis Tsipras is trying to form a government after elections that punished politicians . Greece should stand by the bailout terms , a European Commission spokeswoman says .