KIEV, Oct 26 (Reuters) Ukraine's supreme administrative court has rejected claims by some political parties that the commission overseeing the Sept. 30 parliamentary election made procedural mistakes, a court official said today.

The case, brought by several parties who failed to secure the 3 percent of votes needed to get into parliament and by the Communist party, has delayed the formation of a governing coalition.

''The decision was made. An appeal was rejected,'' the court official told Reuters.

Ex-premier Yulia Tymoshenko, fiery ally of President Viktor Yushchenko during the 2004 Orange Revolution, is poised to form a government after her bloc and his Our Ukraine won a slim majority over Prime Minister Viktor Yanukovich and his allies.

The ruling paves the way for the body whose role was challenged, the Central Election Commission, to officially publish the results of the election, restarting the stalled progress towards a new government.

Under the constitution, the first session of the new parliament has to sit within 30 days of the poll results being published, and a government must be formed within 30 days of the chamber's first sitting.

Reuters ARB RN1314