Subiza, B. and J.E. Peris
Group Decision and Negotiation – 2017

Keywords: Approval balloting, committee election, unanimity, justified representation, representativeness

Abstract: A new voting rule for electing committees is described. Specifically, we use approval balloting and propose a new voting procedure that guarantees that if there is a committee that represents (with a given proportion of representatives) all of the existing voters, then the selected committee has to represent all of voters in at least the same proportion. This property is a way of selecting a committee that represents completely all of voters when such a committee exists. The usual voting rules in this context do not satisfy this condition.