FILE - In this Oct. 3, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney and President Barack Obama talk after the first presidential debate in D

 

              FILE - In this Oct. 3, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney and President Barack Obama talk after the first presidential debate in D
FILE - In this Oct. 3, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney and President Barack Obama talk after the first presidential debate in Denver. There they go again. Or do they? When President Barack Obama and Mitt Romney debate Tuesday night, the fact-checking media will be watching for the erroneous claims that have popped up repeatedly in the campaign, as well as brand new ones. Here's how you can play fact-check Whac-A-Mole, too. (AP Photo/Charlie Neibergall, File)