The Puea Thai party will launch its bid for re-election next month with rallies in its northern heartlands and on the outskirts of the capital, which has been shaken by weeks of sometimes violent demonstrations that have left eight people dead and about 400 wounded.
"I am confident that the campaign will go smoothly - we are not the ones triggering conflict," said party leader Jarupong Ruangsuwan, adding that the election slogan would be urging people to vote to "preserve democracy".
Thailand has been periodically convulsed by political bloodshed since Thaksin was overthrown by royalist generals in a coup in 2006.
The current protests, led by a former opposition MP, erupted over a now-shelved amnesty plan that could have allowed the former leader to return.
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Demonstrators, who have vowed to disrupt the election on February 2, want Thai democracy to be suspended for a year or more, with a "people's council" installed to implement loosely defined reforms.
Thailand's main opposition Democrat Party, which has not won an elected majority in two decades, has thrown its support behind the rallies and opted to boycott the elections.
Protesters have prevented candidates registering for the polls in several opposition-dominated southern provinces, which could result in a situation in which there are not enough elected members of parliament after the polls to select a prime minister.
They have vowed to occupy Bangkok from January 13, to prevent government officials from going to work and cut off power and water to official buildings.
The country's election commission, whose call to postpone the polls was rejected by the government, said yesterday the election was expected to go ahead.