Democrat Party leader Abhisit Vejjajiva says he will not vote in Sunday's election.
In a message posted in his Facebook page, Mr Abhisit said he would not vote because the election was unconstitutional and would not serve the purpose of an election under a democratic system as expected.
“I clearly state my stance in advance because I do not want anyone to incite trouble at the Sawasdee Wittaya school polling station," he said.
The polling station is located near Mr Abhisit’s residence in Soi Sukhumvit 31.