This paper studies the effect of electoral rule disproportionality and the effect of the number of competing parties on the degree of platform polarization by the means of a unidimensional spatial model with policy motivated parties. We show that platform polarization is decreasing in the level...

We study an electoral competition model in which each voter is characterized by income level and non-economic characteristics, and where two vote share maximizing candidates, with fixed non-economic characteristics (differentiated candidates), strategically promise a level of redistribution. We...

We design the class of (indirect) Approval mechanisms which allow the players' strategies to coincide with the subsets of the outcome space. By focusing on the single-peaked domain, we prove that: a) Each of these mechanisms is characterized by a unique equilibrium outcome, and b) for almost...