From UnwelcomeGuests
C-SPAN Podcasts:
Show Archive: http://www.c-span.org/Podcasts.aspx
Host: Various
Length: Various
Schedule: Daily
Focus: Washington D.C. politics, non-fiction authors, Foundation and Think Tank policy discussions
Style: Interviews, Q+A, speeches, hearings, Congressional proceedings
Started: Unknown
C-SPAN is a non-profit cable channel dedicated to public affairs and funded by the cable industry. The page linked to collects six different podcast collections, ranging from interviews to political speeches, congressional debates, think tank and foundation discussions, and other matters, with a focus on mainstream Washington D.C. politics.