期刊名称：SERIEs: Journal of the Spanish Economic Association
印刷版ISSN：1869-4187
电子版ISSN：1869-4195
出版年度：2012
卷号：3
期号：1-2
页码：1-14
DOI：10.1007/s13209-011-0039-6
出版社：Springer Berlin / Heidelberg
摘要：A high court has to decide whether a law is constitutional, unconstitutional or interpretable. The voting system is runoff. Runoff voting systems can be interpreted both, as social choice functions or as mechanisms. It is known that, for universal domains of preferences, runoff voting systems have several drawbacks as social choice functions. Although in our setting the preferences are restricted to be single-peaked over three alternatives, these problems persist. Runoff mechanisms are not well-behaved either: they do not implement any Condorcet consistent social choice function in undominated subgame perfect Nash equilibria. We show, however, that some Condorcet consistent social choice functions can be implemented in dominant strategies via other simple and natural mechanisms.
关键词：Runoff voting system; Condorcet consistency; Strategy-proofness; Implementation theory
