Both Vice President Joe Biden and GOP vice presidential candidate Paul Ryan, shown at their debate on Thursday, are practicing Catholics. Mary Altaffer/AP hide caption

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Republican presidential candidate Mitt Romney speaks during a roundtable discussion on manufacturing this Wednesday in Bedford Heights, Ohio. MANDEL NGAN/AFP/Getty Images hide caption

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Coal miners listened as GOP presidential nominee Mitt Romney spoke during a rally last month in Beallsville, Ohio. Both Romney and President Obama have made the state a focal point of their campaigns. Justin Sullivan/Getty Images hide caption

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Traders work in the bond pit at the Chicago Board of Trade in 1995. In recent decades, much of the trading has left the pits and gone electronic. Michael S. Green/AP hide caption

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