Bob Novak has the final word on Mitt Romney's speech last week:
Even Romney advisers who doubted the wisdom of Thursday's speech hoped his speech would make their candidate appear presidential after his slugging match with Rudy Giuliani in the last presidential [debate]. He succeeded there. But he certainly did not perform an exorcism of the demons of religious prejudice who have infiltrated his presidential candidacy.
It's worth noting that Huckabee has somehow translated his Iowa lead into national popularity. That's something Romney, who led Iowa for months, seemed never able to do.