Republican presidential candidate and former Massachusetts Gov. Mitt Romney signs shirts for children as he campaigns at the Iowa Events Center, in Des Moines, Sunday, Nov. 4, 2012. (AP

 

              Republican presidential candidate and former Massachusetts Gov. Mitt Romney signs shirts for children as he campaigns at the Iowa Events Center, in Des Moines, Sunday, Nov. 4, 2012. (AP
Republican presidential candidate and former Massachusetts Gov. Mitt Romney signs shirts for children as he campaigns at the Iowa Events Center, in Des Moines, Sunday, Nov. 4, 2012. (AP Photo/Charles Dharapak)