Electoral Systems and Government Stability: A Simulation of 2006 Italian Policy Space
This paper tracks a path from electoral results to government formation, in order to assess whether the characteristics of the party system put forward by the spatial theory of voting may influence, and how, the relationship between electoral system and government stability. In this regard we perform a simulation concerning the 2006 Italian general election, by computing the parliamentary seats that parties would get in an election through various electoral systems, starting from given electors’ votes. We then introduce two well-known game theoretical models that explain stability and instability of coalition governments. We draw some counterfactual deductions about what would have occurred to Italian government stability if other electoral systems had been in use. The results of our simulation suggest that the stability consequences of technical changes in an electoral system are influenced by the spatial features of the party system.
Volume (Year): 3 (2009)
Issue (Month): 3 (October)
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- Marie-Edith Bissey & Mauro Carini & Guido Ortona, 2004.
"ALEX3: a Simulation Program to Compare Electoral Systems,"
Journal of Artificial Societies and Social Simulation,
Journal of Artificial Societies and Social Simulation, vol. 7(3), pages 3.
- Bissey, Marie-Edith & Carini, Mauro & Ortona, Guido, 2003. "ALEX3: A simulation program to compare electoral systems," POLIS Working Papers 36, Institute of Public Policy and Public Choice - POLIS.
- Ottone, Stefania & Ponzano, Ferruccio & Ricciuti, Roberto, 2007.
"Simulating voting rule reforms for the Italian parliament. An economic perspective,"
POLIS Working Papers
88, Institute of Public Policy and Public Choice - POLIS.
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- McKelvey, Richard D., 1976. "Intransitivities in multidimensional voting models and some implications for agenda control," Journal of Economic Theory, Elsevier, vol. 12(3), pages 472-482, June.
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