May 7: What next in UK election?

How do Clegg, Cameron and Brown play the political game over this weekend? Are Labour and the Tories both too toxic for the Lib Dems? Why did Labour not collapse completely and Clegg fail to capitalise on the debates? The FT's election panel debates the issues. The panel is: Charles Lewington, John Major's former press secretary; Miranda Green, former press secretary to Paddy Ashdown; and Matthew Taylor, Tony Blair's former head of policy.