Last night strengthened the argument that Lehane's attempts to slow Dean's momentum in Iowa may have driven the nail into Clark's campaign. By intensifying the latent trend against Dean, of course, Lehane created the conditions for Kerry to regain front-runner status, forcing Clark into a war against an enemy he didn't prepare for. The Maginot Line Clark built against Dean won't even slow Kerry down.
The delicious irony, of course, is that Lehane did his best work for Kerry after he left to work for a rival campaign.