FILE - In this Oct. 27, 2012, file photo, President Barack Obama, left, speaks to supporters at a campaign event at Elm Street Middle School in Nashua, N.H. Political mailers are stuffe

 

              FILE - In this Oct. 27, 2012, file photo, President Barack Obama, left, speaks to supporters at a campaign event at Elm Street Middle School in Nashua, N.H. Political mailers are stuffe
FILE - In this Oct. 27, 2012, file photo, President Barack Obama, left, speaks to supporters at a campaign event at Elm Street Middle School in Nashua, N.H. Political mailers are stuffed in their front doors and the phone rings nonstop. Under a fall canopy of crimson and golden leaves, the battle for independent voters is being waged hour by hour in battleground New Hampshire. The state offers only four electoral votes in next week's presidential election, but Obama and challenger Mitt Romney are vying fiercely here for the remaining independent voters, who are decidedly ambivalent about either candidate. (AP Photo/Pablo Martinez Monsivais, File)