They have an open goal but I have a feeling they'll fluff it.
I think Gordon Brown will stake his claim as an different leader to Blair. He's seen as a safe pair of hands and people trust him to run the economy, but I think his perceived grumpiness will make him seem strong and serious. Amazing how fickle the public can be.
The Tories were always going to come unstuck once they started discussing policy. In the same way that Blair had to bite the bullet and move away from old Labour, Cameron is ham-strung by the fact that the Tories are still the party of the old school right. And while he's doing his best to make the party seem more moderate and centre-right, the fact is that the party at large doesn't want that.
It is dominated by old school, blue-rinse WI members, fox hunting land owners and braying Nice-but-Dims - they want low taxes, unquestioning tradition and a hardline on hoodies, immigrants and the EU. If he can convert, soften or ditch them, he has a chance of claiming the middle ground and appearing electable.
But, as this grammar school row is showing, party members aren't willing to go with him.
It'll still be close, though.