As for what the shadow ministers actually said, Villiers highlighted Unite's role in the BA troubles, while Gove gave a speech which argued that Brown's Labour Party "bears only the most superficial resemblance to the Labour Party that swept to power in 1997." There were passages outlining Unite's heavy presence in both Labour's funding rolls and their candidate lists. And an entire section devoted to the creeping influence of Whelan, whose "distinctive fingerprints can be detected all over Labour's recent lurch to the left in key policy areas." Somewhere in there, there was the question that the Tories hope will resonate: "How can we trust what Gordon Brown says ... when we know he is in hock to Unite and in thrall to Charlie Whelan".
It's all quite punchy stuff. And it's certainly important that the limelight is shone, meltingly hot, on Whelan & Co. But - as I've said before - for the Tories to do this at this stage of the electoral cycle carries a distinct risk with it: that a disillusioned public sees all this as too wearily Westminster-centric; that voters would prefer to hear about the everyday issues which really matter to them. To my mind, that's probably what happened in the case of Labour's campaign against Lord Ashcroft.
As it happens, I think this morning's triple-concentrated attack on Unite probably got the balance right. The Tories have launched their blitzkreig. Now they need to concentrate their forces elsewhere.
P.S. Here's the campaign poster: