FILE - In this Oct. 10, 2012, file photo U.S. Senate candidates for Massachussetts, Republican Sen. Scott Brown and Democratic challenger Elizabeth Warren, shake hands prior to their de

 

              FILE - In this Oct. 10, 2012, file photo U.S. Senate candidates for Massachussetts, Republican Sen. Scott Brown and Democratic challenger Elizabeth Warren, shake hands prior to their de
FILE - In this Oct. 10, 2012, file photo U.S. Senate candidates for Massachussetts, Republican Sen. Scott Brown and Democratic challenger Elizabeth Warren, shake hands prior to their debate in Springfield, Mass. Brown is talking bipartisanship in his race against Warren. He won a special election in January 2010 to fill the seat of the late Sen. Edward Kennedy, but this election he’ll likely face 700,000-800,000 more voters, many Democrats or independents who favor Democrats.(AP Photo/Elise Amendola, File)