BRATISLAVA (Reuters) - Slovak Prime Minister Vladimír Mečiar is unlikely to be able to form a government following elections next month even though his party has a slight edge in the individual popularity stakes, an opinion poll showed. The August 7-13 poll, conducted by the private MVK agency showed Mečiar`s party, the Movement for a Democratic Slovakia (HZDS), on top with 25.7 percent, against 22.6 percent for the main opposition group, the Slovak Democratic Coalition (SDK). But the three parties in a current Mečiar-led coalition are polling at a total 35.3 percent against 56.9 percent for the combined opposition and one of the governing parties is in danger of not having enough support to win parliamentary seats. The party with the largest vote total is expected to be given first attempt to form a government, but the HZDS would likely fail if recent polling numbers hold up in the September 25-26 parliamentary election. The opposition, united mainly by its fierce opposition to Mečiar, combines the SDK, the Party of Civic Understanding (SOP), the Party of the Democratic Left and the Hungarian Coalition. In the previous poll by MVK at the end of July, Mečiar`s coalition had 37 percent, while the opposition 59.6 percent. Last Friday, Mečiar`s HZDS lost its bid in the Slovak Supreme Court to block the SDK from registering as a single entity. HZDS claimed the SDK, a former alliance of five parties, should not be allowed register as a single party but the court said the objection was groundless. If the court had upheld the claim, minor parties within the SDK might not have been able to reach the five percent threshold necessary for taking seats in parliament. The three parties in the current government are running as separate entities. Monday`s poll was conducted among a representative sample of 1,109 respondents, where 14.4 percent said they were undecided, and 9.7 percent said they would not vote.