Look, it might even be true. Substantially, it was true when Norman Lamont was going on about his greens shoots.
But nobody believed him, and he has never lived down the gales of derision, nor will he ever do so.
In any case, recovery from what? There was no recession on the day of the last General Election. It was over. Until Osborne came in.
The popular mind no longer associates the Conservative Party with anything apart from recession, sleaze, and posh boy incompetence.
It doesn't have to be true. It does not matter one jot whether or not it is true. It is what everyone thinks, and it how they are going to vote.