Republican presidential candidate's Rep. Ron Paul, R-Texas, left, Texas Gov. Rick Perry, center, and former Massachusetts Gov. Mitt Romney, greet each other prior to a debate Thursday, Sept. 22, 2011, in Orlando, Fla. (AP Photo/John Raoux)

Associated Press
Republican presidential candidate's Rep. Ron Paul, R-Texas, left, Texas Gov. Rick Perry, center, and former Massachusetts Gov. Mitt Romney, greet each other prior to a debate Thursday, Sept. 22, 2011, in Orlando, Fla. (AP Photo/John Raoux)
Republican presidential candidate's Rep. Ron Paul, R-Texas, left, Texas Gov. Rick Perry, center, and former Massachusetts Gov. Mitt Romney, greet each other prior to a debate Thursday, Sept. 22, 2011, in Orlando, Fla. (AP Photo/John Raoux)
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