Arlen Specter was a United States Senator from Pennsylvania. Specter was a Democrat from 1951 to 1965, then a Republican from 1965 until 2009, when he switched back to the Democratic Party. Wikipedia*
On the C-SPAN Networks:
Arlen Specter has 1,922 videos in the C-SPAN Video Library; the first appearance was a 1982 Senate Committee as a Republican Senator for Pennsylvania. The year with the most videos was 2006 with 138 videos. The year with the highest average number of views per program was 2009 with an average of 2,321 views per program. Most appearances with Patrick J. Leahy (16), Phil Gramm (15), Harry Reid (13). Most common tags: Pennsylvania, Republican Party, Senate.