I didn't see it, but Frank Luntz' focus groups liked Romney.
The dial readings:
Near the end he notes the focus group hated John McCain's amnesty waffle. (And liked Romney's answer, which was that whether what McCain was proposing was or was not technically amnesty, it still sucks.)
Here many of the focus group indicate they've shifted to Romney:
...and they hated Huckabee. They didn't thin much of Teh Fred, either. One guy says his thinking is clear and true, but his communication of that thinking not so much. I guess that's fair enough.
But then, Fred should have scored big with this answer: