The Impact of Structural and Ideological Party Cleavages in West European Democracies: A Comparative Empirical Analysis

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Abstract
This article examines the relative impact of different political cleavages on party preference in a comparative West European context. The point of departure is the so-called ‘new polities’ theory, which postulates that the value polarization between materialist and post-materialist (MPM) political orientation is a new and increasingly important dimension in this respect. The findings from ten West European democracies confirm that the MPM cleavage is an important party cleavage in most of the countries examined, although the traditional structural cleavages are still most important from a causal perspective. The MPM dimension does not, however, have the largest impact in the most advanced industrial democracies, something new politics theory appears to contend. Another ideological cleavage dimension – ‘Left-Right Materialism’ – is also an important party cleavage, and appears to have most impact in the most advanced (post-industrial) West European countries.