Barack Obama 2012

Associated Press
FILE - In this April 3, 2012 file photo, Republican presidential candidate, former Pennsylvania Sen. Rick Santorum speaks in Cranberry, Pa. Rick Santorum boasts that deep conservative values make him a stronger challenger against President Barack Obama this fall than likely GOP nominee Mitt Romney.  (AP Photo/Jae C. Hong, File)

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In November, President Barack Obama faces off against the Republican Party nominee, Mitt Romney.

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