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Photo by: Chris Carlson

Republican presidential candidates are greeted by former first lady Nancy Reagan, center, before a Republican presidential candidate debate at the Reagan Library Wednesday, Sept. 7, 2011, in Simi Valley, Calif. From left are, Rep. Michele Bachmann, R-Minn., former Massachusetts Gov. Mitt Romney, Reagan, Texas Gov. Rick Perry, and Rep. Ron Paul, R-Texas. (AP Photo/Chris Carlson, Pool)

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