United States Congressional Roll Call Voting Records, 1789-1990: Reformatted Data (ICPSR 9822)

Published: Jan 12, 2006

Principal Investigator(s):
Howard L. Rosenthal; Keith T. Poole



Version V2

Roll call voting records for the United States House of Representatives and Senate through the 100th Congress are presented in this data collection. Each data file in the collection contains information for one chamber of a single Congress. The units of analysis are the individual members of the House of Representatives and Senate. Each record contains a member's voting action on every roll call vote taken during that Congress, along with variables that identify the member (e.g., name, party, state, and uniform ICPSR member number). In addition, the codebook provides descriptive information for each roll call, including the date of the vote, outcome in terms of yeas and nays, name of initiator, the relevant bill or resolution number, and a synopsis of the issue.

Rosenthal, Howard L., and Poole, Keith T. United States Congressional Roll Call Voting Records, 1789-1990:  Reformatted Data  . Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2006-01-12. https://doi.org/10.3886/ICPSR09822.v2

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1789 -- 1990

1990 -- 1991

This collection is derived from UNITED STATES CONGRESSIONAL ROLL CALL VOTING RECORDS, 1789-1990 (ICPSR 0004), and differs from that collection in several ways. Codebooks have been standardized in format across all Congresses, and a number of discrepancies in members' identifying information (member identification number, party, etc.) have been corrected.

All roll call votes in the United States Congress.

Inter-university Consortium for Political and Social Research. UNITED STATES CONGRESSIONAL ROLL CALL VOTING RECORDS, 1789-1990 (ICPSR 0004)

roll call voting data



2006-01-12 All files were removed from dataset 201 and flagged as study-level files, so that they will accompany all downloads.

2000-07-27 Replacement data files for the House, 1st through 99th Congresses (Parts 1-197, odd) have been provided by the principal investigators. For details on the specific corrections made to this version of the data, users should consult the User Guide. In addition, data for the House's 100th Congress (Part 199) and the entirety of the Senate votes from the 1st-100th Congresses (Parts 2-200, even) have been added, making the collection complete through 1990. Also, a User Guide for All Parts (Part 201) has been added. While the previous version of this collection was available only on diskette, the entire collection is now available online for downloading from the ICPSR Website.


  • Data in this collection are available only to users at ICPSR member institutions.

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