This study considers a hybrid voting model where some of the voters sincerely vote but the others may not. By using the model, we discuss several voting rules: the random dictatorship rule, plurality rule, Borda rule and others. In each rule, we derive the threshold such that a Pareto efficient...

This study considers a voting rule wherein each player sincerely votes when he/she has no information about the preferences of the other players. We introduce the concept of rank-dominant strategies to discuss the situation where a player is completely ignorant and decision theoretic...