Nationalization of the American Electorate

The conceptual meaning of and the empirical evidence for the nationalization of the American electorate is explored. Two conceptually distinct dimensions of nationalization are identified: nationlization in terms of a convergence in the level of partisan support across geographical subunits of the electorate, and nationalization in terms of a uniformity of response by geographical units to political forces. Empirical estimates for both types of nationalization are derived for the American electorate for the period from 1842 to 1970. Unlike previous scholars, we find no trend toward increasing nationalization of the vote. Possible reasons for this lack of nationalization of the vote are suggested.