"... to prove himself the ultra-base alternative to Romney. He failed, miserably. Pawlenty’s failure is not the kind of stumble he can correct later. It goes to the core of the guy: offered the chance to confront Romney directly, he flinched. He did not look 'nice.' He did not look like he was observing the 11th commandment. He looked uncertain and weak. He looked like a man fully aware that Romney would best him in a one-to-one discussion of healthcare policy."
ADDED: James Taranto said Pawlenty looked weak.
AND: Here's the relevant video of Pawlenty.