FILE - In this Oct. 17, 2012 file photo, Republican presidential candidate and former Massachusetts Gov. Mitt Romney campaigns at Ida Lee Park in Leesburg, Va. Independent groups workin

 

              FILE - In this Oct. 17, 2012 file photo, Republican presidential candidate and former Massachusetts Gov. Mitt Romney campaigns at Ida Lee Park in Leesburg, Va. Independent groups workin
FILE - In this Oct. 17, 2012 file photo, Republican presidential candidate and former Massachusetts Gov. Mitt Romney campaigns at Ida Lee Park in Leesburg, Va. Independent groups working to elect Republican Mitt Romney have helped him match or even exceed President Barack Obama’s TV ad spending in dozens of media markets in battleground states. But the spending disparity doesn’t tell the whole story, as Obama is still getting more value for his money with his ads. (AP Photo/Charles Dharapak)