The public affairs coverage on the C-SPAN networks other than the House and Senate floor debates is wide-ranging. C-SPAN is considered a useful source of information for journalists, lobbyists, educators and government officials as well as casual viewers interested in politics, due to its unedited coverage of political events.[1] C-SPAN has been described by media observers as a "window into the world of Washington politics" and it characterizes its own mission as being "to provide public access to the political process".[2][51] The networks cover U.S. political campaigns, including the Republican, Democratic, and Libertarian presidential nominating conventions in their entirety.