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- Inter-university Consortium for Political and Social Research132
- CBS News38
- ABC News31
- United States Department of Justice. Office of Justice Programs. Bureau of Justice Statistics26
- The New York Times25
- The Washington Post24
- United States Office of Personnel Management6
- American National Election Studies4
- Institute of Museum and Library Services3
- United States Federal Energy Administration3
- Jackman, Simon2
- Office of Economic Opportunity2
- Segura, Gary2
- United States House of Representatives. Committee on House Administration. House Information Systems2
- University of Michigan. Survey Research Center2
- Campbell, Angus1
- Clarke, Harold D.1
- Cooper, Homer1
- First Amendment Center1
- Gale (Firm), publisher1