FILE - In this Sept. 4, 2012 file photo, Tammy Duckworth, former assistant secretary of the U.S. Department of Veterans Affairs and a candidate for Illinois' 8th Congressional District seat, addresses the Democratic National Convention in Charlotte, N.C. Duckworth faces Republican U.S. Rep. Joe Walsh in the Nov. 6, 2012 general election. (AP Photo/J. Scott Applewhite, File)
