Chuan, chairman of the Democrat Party's Advisory Council, said if such candidates were elected they would have no credibility and could not truly call themselves representatives of the people because their party's candidate had already failed in the first round of voting.

"The result of the election will be bizarre and without credibility as those who become MPs will be like people who the people do not want as MPs but managed to become MPs with a small number of votes. Considering the conditions laid down by the Constitution, the election laws and the discretion of the Election Commission, I believe many problems will arise," Chuan said.

Chuan said the Election Commission's decision to permit failed candidates, virtually all from the ruling Thai Rak Thai Party, to run again in a different constituency reflected the lack of minimum standards at the commission.

The former prime minister also lashed out at caretaker Prime Minister Thaksin Shinawatra's criticism that the Democrat Party had abandoned democratic means by boycotting the election.

"The PM must examine his own actions ... what Thaksin is saying is like lying to himself. The behaviour of the PM has caused a lot of confusion within Thai society," said Chuan.

He said it was Thaksin who was trying to undermine other political parties through massive vote-buying, electoral fraud and the outright purchase of some political parties and politicians.

"These are beyond the rules. But those who do not believe in the democratic system think they can resort to any means as long as they win the election.

"The rules have been violated continuously until now," said Chuan.

As long as there is something wrong with the political situation, with or without Thaksin's formal presence, people will remain resolute on removing the system, he said.