Poll: Should the Green Party be involved in the televised debates?
Green Party membership appears to have surged past Ukip's amid the row over general election debates.
Some 2,000 more people joined overnight, bringing the total across the country to 43,829, according to a spokesman.
Ukip said its membership stood at 41,943 as of yesterday, while the latest figures issued by the Liberal Democrats in November put them only slightly higher on 44,526.
The Greens have been fighting to be included in the televised election debates alongside David Cameron, Ed Miliband, Nick Clegg and Nigel Farage.
The Prime Minister has made his own participation dependent on the party featuring, saying it would unfair to leave them out if Ukip are given a berth. Opinion polls have suggested the public also backs their inclusion.
But Ofcom has indicated that the Greens should not be treated as a major party for the purposes of campaign coverage, and the format currently proposed by the broadcasters does not involve leader Natalie Bennett.
Yesterday Ms Bennett wrote to Mr Miliband, Mr Clegg and Mr Farage urging them to accept her involvement so that the debates can go ahead.
