Geoff Mulgan used to be at the heart of Downing Street when he was head of Blair’s policy unit. In an interview for GMTV tomorrow he will say through gritted teeth the usual positive guff about Gordon – a tad insincerely methinks – and then he gets a dig in at the end.

“I think David Cameron is a pretty impressive leader as well. That’s why I think Britain is unusually well placed from the next decade or so in terms of our potential political leadership.”

He is basically saying he won’t mind if Dave not Gordon becomes PM. Mulgan is not some outsider, he is a Blairite wonk who founded Demos and went on to become Blair’s director of strategy at the Performance and Innovation Unit. Is that the first time an über-Blairite has publicly endorsed Cameron?