United Front for Democracy against Dictatorship (UDD) leader Jatuporn Promphan yesterday announced a mass rally of red shirts on April 5 but did not specify the venue.
The red shirts yesterday held a mass rally in South Pattaya, Chon Buri, where they organised a rite to mourn the Constitutional Court ruling on Friday annulling the February 2 election.
Jatuporn called on the red shirts to wear black from tomorrow to Sunday to mourn the behaviour of independent agencies.
People's Democratic Reform Committee chief Suthep Thaugsuban on Friday night said the PDRC would oppose the upcoming election unless it followed national reform.
Suthep said he would soon mobilise anti-government protesters for another mass rally in Bangkok.
"There will be heavier opposition as we call for immediate national reform," he said.
"An election only comes after that. So don't try. It will be a waste of energy and budget as the people are not ready to go voting. They want reform."
Meanwhile, Democrat Party leader Abhisit Vejjajiva called on caretaker Prime Minister Yingluck Shinawatra and Suthep to come together in televised talks to try and find a solution to the political problems.
Speaking at a PDRC event at Lumpini Park in Bangkok yesterday to raise funds for rice farmers, Abhisit said the Democrat Party, which boycotted the February 2 election, would run in the next election if it was organised fairly and "acceptable to all sides".
"Unless the PM agrees to hold talks, the country cannot move on," he said, without revealing if he had discussed the matter with Suthep.
The date for a new general election is yet to be set, with the Election Commission to discuss the matter with the government and the other political parties.
Pheu Thai Party spokesman Prompong Nopparit called on the Election Commissioners to resign and pay the Bt3.8 billion cost incurred in staging the February 2 poll.
His deputy, Anusorn Iamsa-ard, reiterated that there had been a conspiracy by the PDRC and some political parties, independent agencies as well as the military and unidentified forces to topple the government.