Santorum: White House doing nothing to stop Iran
Republican presidential candidate rehashes old debate with Biden over U.S. policy toward Iran
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Republican presidential candidate rehashes old debate with Biden over U.S. policy toward Iran
Candidates aim their fire at Herman Cain as Romney remains unscathed
John Dickerson: Debate performance helps solidify former Massachusetts governor status as frontrunner in GOP race
In joint interview, Mitt Romney and Chris Christie urge Perry to repudiate pastor, brush off talk of Christie joining ticket
Texas governor tells college students Social Security endangered for "your generation"
Herman Cain's tax plan attacked as unworkable; candidate replies that it could pass, says claims it will reduce revenue are "incorrect"
Former speaker lashes out at Washington, Barney Frank says Gingrich is frustrated by weak poll numbers
Former Massachusetts governor positioned himself closer to the center as he seeks support of crucial independent voters
Mitt Romney shines as Rick Perry, Herman Cain fall short at GOP face-off in New Hampshire
In GOP presidential debate, Mitt Romney defends his Mass. health care plan, slams Perry's record, saying, "I care about people"
GOP presidential contender stresses economic focus should be on middle class, even as he's criticized "class warfare"
In a blow to the president's economic agenda, the Senate failed to break a GOP-led filibuster on the president's $447B jobs plan
First lady Michelle Obama jumped at the chance to break a world record
Chris Christie backs Mitt Romney after after declining to enter the race himself, casting Romney as most electable candidate
The blessing of the popular Republican governor was much sought after by GOP rivals for the presidential nomination