The agreement is the result of SYRIZA's negotiation, stated party spokesperson Olga Gerovassili on Wednesday to private SKAI TV.

Prime Minister Vassiliki Thanou will announce  specific measures on the problems that the Aegean islands face from the increased migration and refugees flow Wednesday afternoon.

Yet another opinion poll published this week gives previously ruling SYRIZA the support of 26 percent of respondents to 25 percent for rival New Democracy party, showing a neck to neck race for first-place.

President of New Democracy, Vaggelis Meimarakis, is touring Crete, as part of pre-election campaigning.