"We want reform first, after the 20% voter turnout yesterday [in Bangkok area] - the lowest turnout for a general election in Thai history," Mr Sutep told anti-government protesters while marching to the Lumpini protest site.
Some candidates in the Northeast had influenced voters. In the southern provinces, it was up to the people to decide if they would vote, he said.
The former Democrat Party MP said the PDRC had decided to move its demonstrators at Lat Phrao and Victory Monument stages to Lumpini for safety reasons.
"Our evaluation is the caretaker government will use more violent measures against demonstrators at Lat Phrao and Victory Monument stages [if we stay there]," Mr Suthep said. "We don't want to see people getting hurt, but we have to continue the fight."
He said the protesters will continue to close down state offices and they will not be allowed to reopen until the caretaker government steps down to pave way for national reform.
PDRC spokesman Akanat Promphan, who is a stepson of Mr Suthep, said that in addition to the low 20% voter turnout in Bangkok, many ballot papers were defaced by people who wanted to express their opposition to the election.
"If you add up the total number of votes for the Pheu Thai Party, it's still less than the number of votes for Pheu Thai's Bangkok governor candidate Pongsapat Pongcharoen," Mr Akanat said.
The Feb 2 polls would likely become null and void and the only solution to the political problem is for the government to resign, he said.