He said the EC and Mr Suthep may have collaborated in a bid to make the election yesterday void.
''Judging from what has happened, they want this election to be nullified. The government called a House dissolution to return the mandate to the people,'' he said.
The voting was disrupted in many constituencies after ballet boxes and papers could not be delivered to polling units.
In Bangkok, voting across Laksi district was suspended due to violence which left at least six people wounded near the district office on the eve of the election.
Tida Tawornseth, chairwoman of the United Front for Democracy against Dictatorship (UDD), yesterday accused some election officials of intentionally failing to perform their duty.
However, she said the People's Democratic Reform Committee's ''shutdown Bangkok'' campaign failed to stop the election although the anti-government protesters managed to block the delivery of ballot papers, she said.
Ms Tida urged the red shirts to be patient as the election result is unlikely to be known for weeks.
She added the caretaker government will remain in office - probably for another six months - until the election process is completed.
Cartetaker Labour Minister Chalerm Yubamrung said on Sunday the EC has no authority to rule if the election is void.
He said the issue should be decided by the Constitution Court while predicting Pheu Thai is likely to win between 265-280 seats in this election.
Meanwhile, Democrat deputy leader Ong-art Klampaiboon called on the caretaker government to revoke the emergency decree, saying it was not justified.
He said the anti-government protest did not lead to violence or pose a threat to national security as feared by the government.