The shadow of Republican presidential candidate and former Massachusetts Gov. Mitt Romney is cast on a Des Moines sign as he campaigns at Iowa Events Center, in Des Moines, Iowa, Sunday

The shadow of Republican presidential candidate and former Massachusetts Gov. Mitt Romney is cast on a Des Moines sign as he campaigns at Iowa Events Center, in Des Moines, Iowa, Sunday, Nov. 4, 2012. (AP Photo/Charles Dharapak)