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Equilibrium Refinement in Dynamic Voting Games


Daron Acemoglu


Massachusetts Institute of Technology (MIT) - Department of Economics; Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER)

Georgy Egorov


Northwestern University - Kellogg School of Management

Konstantin Sonin


New Economic School; Higher School of Economics; Centre for Economic Policy Research (CEPR)
October 16, 2009

MIT Department of Economics Working Paper No. 09-26

Abstract:     
We propose two related equilibrium refinements for voting and agenda-setting games. Sequentially Weakly Undominated Equilibrium (SWUE) and Markov Trembling Hand Perfect Equilibrium (MTHPE), and show how these equilibrium concepts eliminate non-intuitive equilibria that arise naturally in dynamic voting games and games in which random or deterministic sequences of agenda-setters make offers to several players. We establish existence of these equilibria in finite and infinite (for MTHPE) games, provide a characterization of the structure of equilibria, and clarify the relationship between the two concepts. Finally, we show how these concepts can be applied in a dynamic model of endogenous club formation.

Number of Pages in PDF File: 28

Keywords: voting, agenda-setting games, Markov trembling-hand perfect equilibrium

JEL Classification: D72, C73

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Date posted: October 19, 2009  

Suggested Citation

Acemoglu, Daron, Egorov, Georgy and Sonin, Konstantin, Equilibrium Refinement in Dynamic Voting Games (October 16, 2009). MIT Department of Economics Working Paper No. 09-26. Available at SSRN: http://ssrn.com/abstract=1490164 or http://dx.doi.org/10.2139/ssrn.1490164

Contact Information

Daron Acemoglu (Contact Author)
Massachusetts Institute of Technology (MIT) - Department of Economics ( email )
50 Memorial Drive
Room E52-380b
Cambridge, MA 02142
United States
617-253-1927 (Phone)
617-253-1330 (Fax)
Centre for Economic Policy Research (CEPR)
77 Bastwick Street
London, EC1V 3PZ
United Kingdom
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
Georgy Egorov
Northwestern University - Kellogg School of Management ( email )
2001 Sheridan Road
Evanston, IL 60208
United States
Konstantin Sonin
New Economic School ( email )
47 Nakhimovsky Prospekt
Moscow, 117418
Russia
HOME PAGE: http://www.nes.ru/en/people/catalog/s/ksonin
Higher School of Economics
20 Myasnitskaya street
Moscow, 119017
Russia
Centre for Economic Policy Research (CEPR)
77 Bastwick Street
London, EC1V 3PZ
United Kingdom
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