Encyclopedia of Law and Economics

2019 Edition
| Editors: Alain Marciano, Giovanni Battista Ramello

Simple Majority

  • Silvia FedeliEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-7753-2_441

Definition

Simple majority (SM) is a voting system whereby the highest number of votes for one alternative within those under decision designates the winner. It may refer to a voting requirement of half of either all ballots cast or those voting on the given alternative plus one and also to the highest number of votes cast for any one alternative, while not constituting a majority.

Whenever a collective decision has to be taken, SM seems the natural way to reach a solution.

Various reasons for SM’s wide use have been given in the literature. May (1952), studying the issue of the relation between group choice and individual preferences in the presence of two alternatives, showed that SM is always: decisive (each set of individual preferences leads to a defined/unique group choice), egalitarian (interchanging any two preferences of the voters, the result is unchanged, which implies anonymity/equality of voters), neutral (it does not favor either alternative), and positively responsive...

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References

  1. Arrow KJ (1951) Social choice and individual values. Wiley, New York. 1963Google Scholar
  2. Black D (1948) The theory of committees and elections. Cambridge University Press, CambridgeGoogle Scholar
  3. Borda JC (1781) Mémoires sur les élections au scrutin. In Histoire de l’Académie Royale des Sciences, ParisGoogle Scholar
  4. de Condorcet M-J-A-N (1785) Essai sur l’application de l’analyse à la probabilité des decisions rendues à le pluralité des voix. De l’Imprimerie royale, ParisGoogle Scholar
  5. Downs A (1957) An economic theory of democracy. Harper, New YorkGoogle Scholar
  6. Forte F (1985) Competitive democracy and fiscal constitution. Atl Econ J 13:1–11CrossRefGoogle Scholar
  7. Freixas J, Zwicker WS (2003) Weighted voting, abstention and multiple levels of approval. Soc Choice Welf 21:399–431CrossRefGoogle Scholar
  8. Freixas J, Zwicker WS (2009) Anonymous yes-no voting with abstention and multiple levels of approval. Games Econ Behav 67:428–444CrossRefGoogle Scholar
  9. May KO (1952) A set of independent, necessary and sufficient conditions for simple majority decisions. Econometrica XX:680–684CrossRefGoogle Scholar
  10. Rae DW (1967) The political consequences of electoral laws. Yale University Press, New HavenGoogle Scholar
  11. Ruffini E (1976) Il principio maggioritario: profilo storico (1927). Adelphi, MilanoGoogle Scholar
  12. Sen AK (1970) Collective choice and social welfare. Holden-Day, San FranciscoGoogle Scholar
  13. Taylor MJ (1967) Proof of a theorem on majority rule. Behav Sci XIV:228–231Google Scholar
  14. Tullock G (1959) Some problems of majority voting. J Polit Econ LXVII:571–579CrossRefGoogle Scholar
  15. Zwicker WS (2009) Anonymous voting rules with abstention: weighted voting. In: Brams S, Gehrlein W, Roberts F (eds) The mathematics of preference, choice, and order: essays in honor of Peter C. Fishburn. Springer, Heidelberg, pp 239–258CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Economics and LawSapienza - University of RomeRomeItaly