US Senator Arlen Specter, R-PA, listens to US General Eric Shenseki during a full committee hearing on Shenseki's nomination to be Veterans Affairs Secretary on Capitol Hill in Washington, DC, January 14, 2009. CNN reported on April 28, 2009 that Specter one of the senior GOP senators is switching over to the Democratic party. Getty Images logo Getty Images 6 months ago

US Senator Arlen Specter, R-PA, listens to US General Eric Shenseki during a full committee hearing on Shenseki's nomination to be Veterans Affairs Secretary on Capitol Hill in Washington, DC, January 14, 2009. CNN reported on April 28, 2009 that Specter one of the senior GOP senators is switching over to the Democratic party.