"I agree with Nick"

This was the line that I read was most repeated tonight. So why would Cameron and Brown, especially Brown, do that. Is it because Nick Clegg is the genius and originator of all great British political thought? If it is true I doubt the Tory and Labour leaders believe it. No, the leaders are making a calculation based off statistics. In the last election the LibDems did very well in LAB-CON marginals. Both Brown and Cameron believe that they can squeeze this vote down. The doorstep line can be "Well the LibDems can't win here, and a lot of our policies are like the LibDems." Will it work? We won't know until May 6th.