FILE - In this Sept. 4, 2012 file photo, Rhode Island Gov. Lincoln Chafee addresses the Democratic National Convention in Charlotte, N.C. Chafee, an independent, is joining the Democra

 

              FILE - In this Sept. 4, 2012 file photo, Rhode Island Gov. Lincoln Chafee addresses the Democratic National Convention in Charlotte, N.C.  Chafee, an independent, is joining the Democra
FILE - In this Sept. 4, 2012 file photo, Rhode Island Gov. Lincoln Chafee addresses the Democratic National Convention in Charlotte, N.C. Chafee, an independent, is joining the Democratic Party ahead of his bid for a second term, two Democratic officials said Thursday, May 29, 2013. He served in the U.S. Senate as a Republican but left the GOP in 2007. (AP Photo/J. Scott Applewhite, File)