This Oct. 31, 2006 file photo shows Rep. Patrick Murphy, D-Pa., at the Patrick E. Ward Memorial Park in Philadelphia. Murphy, an Iraq war veteran, is being challenged by Thomas Manion, a Republican who recently retired as a colonel in the Marine Reserves and whose son was killed during his second tour of Iraq. (AP Photo/Matt Rourke, file)

In this Jan. 15, 2008, file photo, Thomas Manion listens to a question from the news media after making the announcement he will run for the Pennsylvania House seat, as his wife Janet looks on, in Doylestown Pa. Manion, a Republican who is the father of a Marine killed in Iraq and recently retired as a colonel in the Marine Reserves, is challenging Rep. Patrick Murphy, D-Pa.,the only Iraq war veteran in Congress. (AP Photo/ Joseph Kaczmarek, file)