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. 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.