Approval with Runoff
Computer Science and Game Theory
2023-01-27 v2
Abstract
We define a family of runoff rules that work as follows: voters cast approval ballots over candidates; two finalists are selected; and the winner is decided by majority. With approval-type ballots, there are various ways to select the finalists. We leverage known approval-based committee rules and study the obtained runoff rules from an axiomatic point of view. Then we analyze the outcome of these rules on single-peaked profiles, and on real data.
Cite
@article{arxiv.2203.02343,
title = {Approval with Runoff},
author = {Théo Delemazure and Jérôme Lang and Jean-François Laslier and Remzi M. Sanver},
journal= {arXiv preprint arXiv:2203.02343},
year = {2023}
}