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Using Ordinal Voting to Compare the Utilitarian Welfare of a Status Quo and A Proposed Policy: A Simple Nonparametric Analysis

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  • Charles F. Manski

Abstract

The relationship of policy choice by majority voting and by maximization of utilitarian welfare has long been discussed. I consider choice between a status quo and a proposed policy when persons have interpersonally comparable cardinal utilities taking values in a bounded interval, voting is compulsory, and each person votes for a policy that maximizes utility. I show that knowledge of the attained status quo welfare and the voting outcome yields an informative bound on welfare with the proposed policy. The bound contains the value of status quo welfare, so the better utilitarian policy is not known. The minimax-regret decision and certain Bayes decisions choose the proposed policy if its vote share exceeds the known value of status quo welfare. This procedure differs from majority rule, which chooses the proposed policy if its vote share exceeds 1/2.

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  • Charles F. Manski, 2024. "Using Ordinal Voting to Compare the Utilitarian Welfare of a Status Quo and A Proposed Policy: A Simple Nonparametric Analysis," Papers 2412.18714, arXiv.org.
    • Handle: RePEc:arx:papers:2412.18714
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    References listed on IDEAS

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    1. Marcus Pivato, 2016. "Asymptotic utilitarianism in scoring rules," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 47(2), pages 431-458, August.
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