The Legislative Explorer is an interactive web app that lets users track the motion of bills through Congress. Users can view legislation by chamber, by party, by sponsor, or even by topic; these controls can help show, for example, that most of the bills that have become law during the 2013-2014 congress have come from Republican sponsors.
The app was created by John Wilkerson and Nick Stramp of the University of Washington’s Center for American Politics and Public Policy (CAPPP) and information design firm Schema. The underlying data comes from over a quarter-million bills and resolutions brought from 1973-present. The data, which is updated nightly, is also available for bulk download in the CAPPP site.