Centrist Sen. Specter died fighting for moderation - Article Photos 6/10

FILE - In this May 17, 2010 file photo, Sen. Arlen Specter, D-Pa., speaks at the Citizens Bank Park, in Philadelphia, as he campaigns across Pennsylvania for the Democratic nomination to run for re-election. Former U.S. Sen. Arlen Specter, longtime Senate moderate and architect of one-bullet theory in JFK death, died Sunday, Oct. 14, 2012. He was 82. (AP Photo/Carolyn Kaster, File)