If Mitt Romney wants to win the Republican nomination for president this year — and he clearly does — he has one big hurdle to overcome, and it has to do with his anger. Or rather, the lack of it.

During the final debate before the Florida primary, the former Pennsylvania senator, and actual winner of the Iowa caucus, Rick Santorum took the opportunity to show some contrast between himself, frontrunner Romney, and former Speaker of the House Newt Gingrich. He homed in, as he had in the previous Florida debate, on the health-care plan Romney had shepherded into law while governor of Massachusetts. 

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