FILE - In this June 27, 2012, file photo, Republican presidential candidate Mitt Romney, accompanied by Virginia Gov. Bob McDonnell speaks during a campaign stop at Electronic Instrumen

 

              FILE - In this June 27, 2012, file photo, Republican presidential candidate Mitt Romney, accompanied by Virginia Gov. Bob McDonnell speaks during a campaign stop at Electronic Instrumen
FILE - In this June 27, 2012, file photo, Republican presidential candidate Mitt Romney, accompanied by Virginia Gov. Bob McDonnell speaks during a campaign stop at Electronic Instrumentation and Technology in Sterling, Va. This year, the presidential race may come down to an even narrower slice of the electorate than simply the nine states where both Obama and Romney are aggressively competing: Florida, Ohio, Virginia, Colorado, Iowa, Nevada, New Hampshire, North Carolina and Wisconsin. (AP Photo/Charles Dharapak, File)