* This paper owes a great debt to my students in the National Opinion Research Center Training program, who did much to rekindle my interest in ideology. I would also like to thank Sidney Verba and Kenneth Prewitt for their intellectual contributions at various stages. The first draft of the paper was written while I was a research Fulbright Fellow at the University of Leiden, the Netherlands. I would like to express my appreciation to the Fulbright Foundation for support during this period and to the University of Leiden for supporting the research. Additional support for myself and for the research was provided by the National Science Foundation under Grant GS 3155 and the Twentieth Century Fund. The data reported in this article come from seven separate surveys and the organization and presentation was a mammoth job in data management. This task could not have been accomplished without the efforts of Carol Ann Lugtigheid, Eric Lugtigheid, John R. Petrocik, Jaap Rozema, and Jaap van Poelgeest.
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