Republican presidential candidates including former Massachusetts Gov. Mitt Romney, Rep. Michele Bachmann, R-Minn., former Minnesota Governor Tim Pawlenty, and former Utah Gov. Jon Huntsman walk on stage for a photo before the start of the Iowa GOP/Fox News Debate at the CY Stephens Auditorium in Ames, Iowa, Thursday, Aug. 11, 2011. (AP Photo/Charlie Neibergall)

Associated Press
Republican presidential candidates including former Massachusetts Gov. Mitt Romney, Rep. Michele Bachmann, R-Minn., former Minnesota Governor Tim Pawlenty, and former Utah Gov. Jon Huntsman walk on stage for a photo before the start of the Iowa GOP/Fox News Debate at the CY Stephens Auditorium in Ames, Iowa, Thursday, Aug. 11, 2011. (AP Photo/Charlie Neibergall)
Republican presidential candidates including former Massachusetts Gov. Mitt Romney, Rep. Michele Bachmann, R-Minn., former Minnesota Governor Tim Pawlenty, and former Utah Gov. Jon Huntsman walk on stage for a photo before the start of the Iowa GOP/Fox News Debate at the CY Stephens Auditorium in Ames, Iowa, Thursday, Aug. 11, 2011. (AP Photo/Charlie Neibergall)
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