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. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Activists in the United States Presidential Nomination Process, 1980-1996 (ICPSR 6143) Abramowitz, Alan I.; McGlennon, John; Rapoport, Ronald B.; et al. 2. National Survey of Callers to the Perot 1-800 Numbers, 1992 (ICPSR 2809) Rapoport, Ronald B.; Stone, Walter J.