Mitt Romney

Associated Press
ADVANCE FOR MONDAY, AUG. 20 AND THEREAFTER - FILE - In this Aug. 16, 2012 file photo, Republican vice presidential candidate Rep. Paul Ryan, R-Wis. speaks at a campaign stop at Walsh University in North Canton, Ohio. Democrats are eagerly renewing their fight against privatizing Social Security now that Republican presidential candidate Mitt Romney has picked Paul Ryan as his running mate. It was a fight that didn’t go well for the GOP back when former President George W. Bush pushed the idea in 2005.   (AP Photo/Phil Long, File)

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Highlights from Republican presidential nominee Mitt Romney's 2012 campaign trail.

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