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 at t

 

              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 at t
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 at the University of Denver in Denver. In 2008, Obama used Colorado as a stage both for his nominating convention and to show how his new brand of politics could unite young voters, women and minorities to create a winning coalition even in places that normally back Republican presidential candidates. Now Colorado has become an example of how hard it has been for Obama to maintain that coalition against the headwinds of a sour economy and his disastrous debate performance in Denver. (AP Photo/Charlie Neibergall, File)