Republican presidential candidate and former Massachusetts Gov. Mitt Romney poses with children wearing shirts which spell out "Romney" as he campaigns at the Iowa Events Center, in Des Moines, Sunday, Nov. 4, 2012. (AP Photo/Charles Dharapak)

Associated Press
Republican presidential candidate and former Massachusetts Gov. Mitt Romney poses with children wearing shirts which spell out "Romney" as he campaigns at the Iowa Events Center, in Des Moines, Sunday, Nov. 4, 2012. (AP Photo/Charles Dharapak)
Republican presidential candidate and former Massachusetts Gov. Mitt Romney poses with children wearing shirts which spell out "Romney" as he campaigns at the Iowa Events Center, in Des Moines, Sunday, Nov. 4, 2012. (AP Photo/Charles Dharapak)
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