Majority rules are frequently used to decide whether or not a public good should be provided, but will typically fail to achieve an efficient provision. We provide a worst-case analysis of the majority rule with an optimally chosen majority threshold, assuming that voters have independent private valuations and are ex-ante symmetric (provision cost shares are included in the valuations). We show that if the population is large it can happen that the optimal majority rule is essentially no better than a random provision of the public good. But the optimal majority rule is worst-case asymptotically efficient in the large-population limit if (i) the voters' expected valuation is bounded away from 0, and (ii) an absolute bound for valuations is known.
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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number
5958.
Patrick W. Schmitz & Thomas Tröger, 2006.
"Garbled Elections,"
Discussion Papers
195, SFB/TR 15 Governance and the Efficiency of Economic Systems, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
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Find related papers by JEL classification: D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Models of Political Processes: Rent-seeking, Elections, Legislatures, and Voting Behavior D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information
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Timothy J. Feddersen & Wolfgang Pesendorfer, 1995.
"The Swing Voter's Curse,"
Discussion Papers
1064, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
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