Greek leftist leader Alexis Tsipras told thousands of people gathered in Athens last night that an end to "national humiliation" was near.
Recent opinion polls showed his Syriza party pulling ahead three days before an election.
Tsipras urged Greeks to give Syriza an outright victory in Sunday's vote so the country could turn its back on four years of austerity under the terms of an EU/IMF bailout.
"On Monday, national humiliation will be over. We will finish with orders from abroad," Tsipras, 40, told flag-waving supporters at his biggest election rally.