This paper constructs and examines state level political ideology from 1789 to 1996 to sort out the long run political trends of the United States. The purpose is twofold: First, to contrast a reliable measure of long run political ideology for each of the contiguous 48 states. Second, to test whether states have become more or less alike over time.
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Working Paper 98–18, Weatherhead Center for International Affairs, Harvard University, 1998.