The Election Commission has rejected petitions filed against Prime Minister Abhisit Vejjajiva, fugitive ex-premier Thaksin Shinawatra and the People's Alliance for Democracy.
The politicians are de-facto leaders of smaller coalition parties, and the meeting took place at the prime minister's official residence, Baan Phitsanulok. Former senator Bannawit Kengrien and former MP Chaiwat Sinsuwong filed the petition.
Suthiphon said the EC members agreed that even though the banned politicians were stripped of their electoral rights, they still had the political right to express their views.
"There are no laws preventing them from doing so," he said.
The secretary-general said the EC, by a majority vote, had also rejected a petition filed by Bannawit against Thaksin. The petition accused Thaksin of influencing the opposition Pheu Thai Party as if he were the leader.
The EC said none of the Pheu Thai executives had been found to be allowing Thaksin to influence the party in a way that would threaten the country's security, Suthiphon said.
As for the petition against the PAD, Suthiphon said the majority of commissioners rejected Ruangdej Luangboriboon's allegation the PAD had violated the Political Party Act by trying to appear as a political party.
The EC found the PAD was formed to campaign against the allegedly corrupt Thaksin government and that its campaigns indicated no attempt to be mistaken as a political party, Suthiphon said. Some PAD leaders formed the New Politics Party, and they did not violate any laws by doing so, the EC found.
The EC also extended its investigation to a petition against Interior Minister Chaovarat Chanweerakul, who is also leader of the Bhum Jai Thai Party, by another 30 days. Chaovarat was accused of violating the Constitution, because his spouse and children held shares in Sino-Thai construction company, which was awarded a state concession.
If found guilty, the interior minister could be stripped of his Cabinet post.
Chaovarat requested an extension of the investigation, saying the documents to prove his case were stored in a company safe in CentralWorld, which was torched in the recent riots.