From the OpenCongress site:

OpenCongress is a free, open-source, non-profit, and non-partisan web resource with a mission to help make Congress more transparent and to encourage civic engagement. OpenCongress is a joint project of the Sunlight Foundation and the Participatory Politics Foundation.

OpenCongress brings together, for the first time in one place, all the best data on what’s really happening in Congress:

• Official Congressional information from Thomas, made available by GovTrack.us: bills, votes, committee reports, and more.
• News articles about bills and Members of Congress from Google News.
• Blog posts about bills and Members of Congress from Google Blog Search and Technorati.
• Campaign contribution information for every Member of Congress from the website of the non-profit, non-partisan Center for Responsive Politics, OpenSecrets.org.