Nationalization and Partisan Realignment in Congressional Elections

The relationship between nationalization of the U.S. electorate and partisan realignment is explored. Concepts and measurement of nationalization are examined, as well as definitions of electoral change. The British concept of swing is utilized as an appropriate measure of electoral change. Examination of long-term trends in the variances of the congressional vote and swing from 1842 to 1980 shows they are related to the electoral dynamics of realignment. Analysis utilizing a variance-components model shows there has never been a nationalization in terms of configuration of the electorate. But nationalization in the movement of the electorate has taken place cyclically, corresponding to the partisan realignments of the 1890s and the 1930s, rather than monotonically, as suggested by previous research .