Best source of federal campaign finance data. Roll Call Online. Online version of the best insider source on the Congress. Vote Smart Web. Excellent collection of materials about the Congress and the federal government maintained by Project Vote Smart.
Site includes an abundance of useful data about financing of Congressional elections.
Online versions of reportage from many mainstream outlets. FEC official site. Official Federal Elections Commission site. TAP produces excellent materials on public access to government information. TAP also distributes briefings on a listserve.