Search Results Use the search box below to revise your search, or start a new search. Studies (1) Variables Publications Your query returned 1 studies. Series results are grouped under the most relevant study. Ungroup series results to view all 1 results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Legislative Professionalism and Incumbent Reelection: The Development of Institutional Boundaries (ICPSR 1227) Berry, William D.; Berkman, Michael B.; Schneiderman, Stuart B.