The GOP's 'fiercely combative' final debate: 5 talking points

Wednesday night's Republican debate turned into a grudge match between Rick Santorum and Mitt Romney. And one candidate clearly came out on top

Mitt Romney and Rick Santorum
(Image credit: Justin Sullivan/Getty Images)

On Wednesday night, the four remaining Republican presidential candidates congregated in Mesa, Ariz., for their 20th, and likely last, debate. Mitt Romney, Rick Santorum, Newt Gingrich, and Ron Paul sat at side-by-side desks, while CNN moderator John King peppered them with questions on everything from foreign policy to congressional earmarks. But with pivotal votes looming — Arizona's and Michigan's primaries on Feb. 28, and make-or-break Super Tuesday on March 6 — much of the debate devolved into "fiercely combative" bickering. Here, five key takeaways:

1. Romney and Santorum really dislike each other

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