Sen. Jon Tester, D-Mont., faces a potentially tough re-election bid. Win McNamee/Getty Images hide caption

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NPR's Martin Kaste on the Montana Senate race
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Former Massachusetts Gov. Mitt Romney gives a victory speech Tuesday in Novi, Mich., after winning the state's primary. Gerald Herbert/AP hide caption

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A line of people wait outside the 11th U.S. Circuit Court of Appeals, which heard arguments over tough new laws targeting illegal immigration in Alabama and Georgia on Thursday. John Amis/AP hide caption

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A Colombian police officer stands guard next to seized Chinese-made AK-47 replicas on Nov. 18, 2009. The guns have become so ubiquitous around the world that Russia's planned redesign may not do much to booster sales. Luis Robayo/Getty Images hide caption

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Will The New AK-47 Be As Popular As The Original?
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Syrian mourners in Qusayr, a few miles outside Homs, carry the body of a man killed by shrapnel, during his funeral on Tuesday. After a month-long assault by the Syrian army, rebels were forced to retreat from Homs on Thursday. Gianluigi Guercia/AFP/Getty Images hide caption

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Syrian Army Drives Rebels From Embattled City
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Students hoping for a repeal of California's ban on affirmative action in college admissions protest outside of the 9th U.S. Circuit Court of Appeals in San Francisco on Feb. 13. The Supreme Court will decide an affirmative action case next fall that could affect college admissions policies across the country. Justin Sullivan/Getty Images hide caption

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Case Renews Focus On Race In College Admissions
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Police restrain a student protesting against education cuts during a rally in Valencia, in eastern Spain, on Feb. 20. Spaniards are beginning to feel the effects of $20 billion in austerity measures, and discontent is growing. Juan Carlos Cardenas/EPA/Landov hide caption

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Students, Police Clash As Spain Reaches Boiling Point
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