Tens of thousands of Georgian opposition demonstrators have marched through the Georgian capital to protest final parliamentary election results they say unfairly favored the ruling party.

Protesters marched Monday in Tbilisi, shortly after a military parade marking Georgia's Independence Day.

Final results from the May 21 polls show President Mikhail Saakashvili's United National Movement party winning 120 of 150 parliamentary seats.

Last week, opposition leader Levan Gachechiladze said his United Opposition Council will not take its 16 seats in the legislature to protest election results. Monday he said his supporters will try to prevent the new parliament from convening, by force if necessary.

Observers from the Organization for Security and Cooperation in Europe noted a number of problems, including pre-election intimidation of candidates and procedural shortcomings in the vote count.

However, they stopped short of rejecting the poll results.

Some information for this report was provided by AFP, AP and Reuters.