Strategic overshooting in national council elections

Abstract

The Swiss party system has become strongly polarized over the last decade, following the rise of the Swiss People's Party and the electoral losses of center parties. This article suggests that these developments are, at least in part, a consequence of strategic behaviour among voters. As the government policy is the result of institutionalized multiparty bargaining, voters have incentives to compensate for this watering-down by supporting parties whose positions are more extreme than their own. This article empirically tests extent and conditions of compensatory voting in the 2007 National Council Elections using Selects survey data. Our results suggest that compensatory voting generally outweighs voting based on ideological proximity and increases with rising district magnitude. © (2010) Swiss Political Science Review.