In the complaint, Mr. Boonyod asked the EC to investigate allegations of media bribery by Pheu Thai deputy spokesman Wim Roongwattanajinda.

Since Mr. Wim is a party executive, Pheu Thai could be dissolved if he was found guilty, he said.

Mr Boonyod also asked the EC to rule whether Pichit Chuenban, the 53rd MP-elect on the Pheu Thai party list, was qualified to run in the July 3 election.

Mr. Pichit was sentenced to six months in jail on June 25, 2008 for contempt of court for offering a sealed box containing 2 million baht in cash to a senior administrative officer of the Supreme Court Criminal Division for Holders of Political Positions.

According to Section 102 (5) of the constitution, a person given a jail sentence and released less than five years before an election is prohibited from contesting the election.

Mr Boonyod also asked the EC to determine if Korkaew Pikulthong, the 54th MP-elect on the Pheu Thai party list was qualified to run.

Mr. Korkaew was arrested and detained on terrorism-related offences during the red-shirt protests last year. He was denied bail and the right to vote in a by-election in Bangkok in which he ran as a candidate and was not elected.