Nigel Farage has claimed David Cameron "would rather not" debate with him on national television.
The Ukip leader joined Ed Miliband and Nick Clegg in sending letters to the Prime Minister in a bid to pressurise him to sign up to the election debates.
"In 2010 David Cameron did very badly in these debates and was seen to be the loser," Mr Farage told Radio 4's Today programme.
"And I have seen this week that he has launched the six main priorities for the Conservatives' general election campaign and he has completely ignored the issues of Europe and immigration.
"I feel very strongly he would rather not debate these things with me on national television."
Ed Miliband, Nick Clegg and Nigel Farage have basically told Mr Cameron: "The debates will go ahead whether you turn up at it or not."
Here is the letter to David Cameron sent by Ed Miliband, Nick Clegg and Nigel Farage urging him to take part in televised election debates.
Ed Miliband, Nick Clegg and Nigel Farage have told David Cameron they are prepared to go ahead with the TV debates - with or without him.