Values and partisanship in left-right orientations: measuring ideology

Abstract. This paper analyzes whether left-right scales provide an interval measure of citizen issue attitudes that is comparable across eight Western European countries. Two commonly held views of left-right self-placement are juxtaposed: (1) the theory that issue attitudes are the primary component of left-right self-placement, and (2) the theory that partisanship is the primary component of left-right self-placement, which entails that left-right scales will take on different substantive meanings in countries with different types of party systems. Distance measures and least squares regression show that left-right scales are generally an appropriate instrument for cross-national tests of theories that have as an explanatory variable the ideological orientations of voters.