(ANSA) - ZAGREB - Seven day ahead of early parliamentary elections in Croatia, polls show an uncertain outcome, given that neither of the two main coalitions can count on majority support. Even though the center party led by former Prime Minister Zoran Milanovic is slightly ahead, it can not rule unless it forms a post-election coalition. Next Sunday, the Croats will return to the polls for the second time in less than a year, after the failure of the premier Tim Oreskovic, who led for six months a government composed of center party and a new centrist party called Most (Bridge). The Croatian Democratic Union (HDZ, Conservative) had been forced to form this awkward coalition since none of the major parties had won the elections last November. The government, however, was not able to hold out, due to internal disagreements over the management of some crucial ministries and a case of conflict of interest involving the HDZ leader, Tomislav Karamarko, who was forced to resign and retire from active politics in June.(ANSA).