Republican presidential candidate and former Massachusetts Gov. Mitt Romney speaks as he campaigns at Dubuque Regional Airport, in Dubuque, Iowa, Saturday, Nov. 3, 2012. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

Republican presidential candidate and former Massachusetts Gov. Mitt Romney speaks as he campaigns at Dubuque Regional Airport, in Dubuque, Iowa, Saturday, Nov. 3, 2012. (AP Photo/Charles Dharapak)