Is Brown gearing up for a hung parliament?

There is a fascinating and very civil discussion between Geoffrey Robinson and Michael Heseltine on the Week in Westminster.  Robinson, who is supposedly close to Brown, admits that the the biggest mistake was the non-election of 2007 and says explicitly that best Labour can hope for is a hung parliament.

Hmmm.  If Labour is calculating that the swing the Tories need is too great to guarantee them a majority, which is not unrealistic, it will be interesting to see if Brown and Mandy do anything to woo the LibDems.  A referendum on PR on the same day as the election could well be a likely option.