Theoretical Perspectives in Analyzing Ideological Change and Persistence: The Case of Swedish Social Democratic Party Ideology*

This article deals with analytical approaches to the problem of change and persistence in party ideologies. After examining a number of theoretical perspectives, the article suggests an additional approach and argues that one of its major advantages is that it offers a possibility to combine significant features of several existing perspectives. The proposed approach focuses on the functions of party ideology. The thesis here is that the development of an ideology is shaped by its functions. Contrary to numerous writers who view ideological functions in dichotomous terms, I argue that the functions of ideology are multiple. The possible functions of party ideology are outlined, and a distinction is introduced between the intellectual and tactical functions of ideology. The article then comments on how tactical functions contribute to ideological change and persistence by examining the case of Swedish Social Democratic ideology.