British Prime Minister Gordon Brown has now confirmed he is willing "in principle" to take part in a TV debate ahead of the election.
On Labour's website, he said he wanted a series of debates on issues including the economy and foreign affairs.
The BBC, ITV and BSkyB have jointly proposed three live debates between leaders of the three main political parties.
Tory leader David Cameron and Liberal Democrat leader Nick Clegg welcomed the move, but the Scottish National Party is against it.
The BBC reports TV debates are not held in Britain in the run-up to general elections.
Tony Blair refused to take part in one when he was prime minister. Mr Brown has argued that he is questioned regularly, at prime minister's questions and in statements to the Commons.