Republican presidential candidates, from left, former Pennsylvania Sen. Rick Santorum, Texas Gov. Rick Perry, former Massachusetts Gov. Mitt Romney, former Speaker of the House Newt Gingrich, Rep. Ron Paul, R-Texas, and Rep. Michele Bachmann, R-Minn, stand together prior to their Republican debate on Dec. 10 in Des Moines, Iowa. (AP Photo/Eric Gay)
Read the article: Back in campaign mode, presidential hopefuls focus
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