Search Results Use the search box below to revise your search, or start a new search. Studies (2) Variables Publications Your query returned 2 studies. Sort by: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Variable Relevance 1. United States Congressional Roll Call Voting Records, 1789-1998 (ICPSR 4) Inter-university Consortium for Political and Social Research; Congressional Quarterly, Inc. 2. United States Congressional Roll Call Voting Records, 1789-1990: Reformatted Data (ICPSR 9822) Rosenthal, Howard L.; Poole, Keith T.