Strategy-proof voting rules

11^th November 2020, 13:00
Estelle Varloot

Abstract

We provide novel characterizations of strategy-proof voting rules when voters have uni-dimensional single-peaked preferences. The analysis links and unifies existing results in the literature such as Moulin's classic characterization in terms of phantom voters and Barbera, Gul and Stacchetti's in terms of winning coalitions ("generalized median voter schemes''). Moreover, we provide new characterizations of various special cases, combining strategy-proofness with other properties such as responsiveness, consistency, or proportionality.

Authors: Andrew B Jenning, Rida Laraki, Clemens Puppe and Estelle Varloot