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Vice President Joe Biden and Republican vice presidential candidate, Rep. Paul Ryan, R-Wis., shake hands before the start of the vice presidential debate, at Centre College in Danville, Ky., Thursday, Oct. 11, 2012. (AP Photo/Pablo Martinez Monsivais)

Vice presidential debate

Vice President Joe Biden and Rep. Paul Ryan squared off in their first round of debates at College Center in Danville, KY, Oct. 11.