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Congressional Data Sources
American National Election Studies
Since 1948, ANES has conducted surveys, usually administered as in-person interviews, during most years of national elections. This series of studies, known as the ANES "time series," constitutes a pre-election interview and a post-election interview during years of Presidential elections, and, usually, a post-election interview only during years of midterm elections.
Charles Stewart's Congressional Data Page
Data compiled by MIT professor Charles Stewart III.
Congressional Bills Project
This public resource provides data and information about more than 400,000 bills introduced in the U.S. Congress, currently 1947-2008, along with extensive information about each bill's progress and sponsor.
CQ Voting and Elections Collection
Historic and current data on voting and elections in the U.S. Includes analyses of voting behavior, election processes, and voter demographics.
Federal Election Commission
Detailed data on campaign contributions and expenditures by candidates, parties, and committees.
Tracks pre-election polls.
Open Secrets/Center for Responsive Politics
Data sets for US politics: campaign finance, lobbying, 527s, and candidate's personal finances.
Policy Agendas Project
Comparative data on policy trends based on bills, hearings, laws and votes.
Research papers and congressional data generated by Howard Rosenthal and Keith Poole.
114th Congress Roll Call Vote Data Download
Jeff Lewis and Keith Poole's up-to-the-minute roll call voting data from the US Senate and US House. Data culled from the Senate and House Clerk's webpages.
Social Science and Management Librarian