Vice President Biden defends the administration's foreign policy --€” and questions Mitt Romney's ideas — on Thursday at New York University. Lucas Jackson/Reuters/Landov hide caption

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Obama Team Changes Line Of Attack Against Romney
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President Obama Takes Steps To End Mass Atrocities
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Republican presidential candidate and former Massachusetts Gov. Mitt Romney speaks at a campaign rally in Tempe, Ariz., on Friday. Jae C. Hong/AP hide caption

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Immigration Remains A Dicey Issue For Romney, GOP
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Courting Tea Party voters in Philadelphia on Monday night, Mitt Romney speaks next to a large statue of Benjamin Franklin at the Franklin Institute. Tim Shaffer/Reuters/Landov hide caption

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Other Options Gone, Tea Party Members Warm Up To Romney
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Tri-State Tea Party Welcomes Romney To Philly
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Santorum Ends Campaign But 'Isn't Done Fighting'
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'Faith And Freedom' In Wis. Primary Push
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Demonstrators cheer the effort to recall Wisconsin Gov. Scott Walker on Jan. 17 in Madison. Andy Manis/AP hide caption

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In Wisconsin, Recall Politics Overshadow Primary
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Rick Santorum won the Louisiana Republican presidential primary Saturday, beating front-runner Mitt Romney in the race to challenge President Obama. Jae C. Hong/AP hide caption

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Another Southern Win Keeps Santorum Optimistic
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Obama's The Topic, Louisiana Is GOP's Next Goal
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A screen shot of President Obama from the trailer for his campaign's movie The Road We've Traveled. BarackObama.com/YouTube hide caption

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Campaign Videos: A Time-Tested Election Tactic
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Peoria, Ill., as seen from across the Illinois River. Jeff Haynes/Reuters /Landov hide caption

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Romney Might Like The View From Peoria
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Santorum Appeals To Religious Conservatives In Ohio
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