Republican presidential candidate, former Massachusetts Gov. Mitt Romney walks with Sen. Rob Portman, R-Ohio, as he arrives in Richmond, Va., Friday, Oct. 12, 2012. (AP Photo/Charles Dh

 

              Republican presidential candidate, former Massachusetts Gov. Mitt Romney walks with Sen. Rob Portman, R-Ohio, as he arrives in Richmond, Va., Friday, Oct. 12, 2012. (AP Photo/Charles Dh
Republican presidential candidate, former Massachusetts Gov. Mitt Romney walks with Sen. Rob Portman, R-Ohio, as he arrives in Richmond, Va., Friday, Oct. 12, 2012. (AP Photo/Charles Dharapak)