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A Spatial Model of Voting with Endogenous Proposals: Theory and Evidence from Chilean Senate


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  • Matteo Triossi
  • Patricio Valdivieso
  • Benjamín Villena-Roldán



Proposers strategically formulate legislative bills before voting takes place. However, spatial voting models that estimate legislator’s ideological preferences do not explicitly consider this fact. In our model, proposers determine the ideology and valence of legislative bills to maximize their objective functions. Approaching to the median legislator ideology and increasing costly valence increases the passing probability, but usually decreases the proposer’s payoff. Using quantile utility proposer preferences, the model becomes tractable and estimable. In this way, we deal with the bill sample selection problem to estimate legislator’s preferences and also, the ideology of proposers, the proposed valence change, and the ideological stance of the statu quo in a common scale. Using Chilean Senate 2009 - 2011 roll call data, our results suggests that (1) political party affiliation significantly affects Senators’ ideology, (2) popular, young and male Senators are more extremist, and (3) proposers during Bachelet and Piñera’s terms have similar ideologies. Key words:

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Paper provided by Centro de Economía Aplicada, Universidad de Chile in its series Documentos de Trabajo with number 294.

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Date of creation: 2013
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Handle: RePEc:edj:ceauch:294

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  1. Gilligan, Thomas W & Krehbiel, Keith, 1987. "Collective Decisionmaking and Standing Committees: An Informational Rationale for Restrictive Amendment Procedures," Journal of Law, Economics and Organization, Oxford University Press, vol. 3(2), pages 287-335, Fall.
  2. James J. Heckman, 1976. "The Common Structure of Statistical Models of Truncation, Sample Selection and Limited Dependent Variables and a Simple Estimator for Such Models," NBER Chapters, in: Annals of Economic and Social Measurement, Volume 5, number 4, pages 475-492 National Bureau of Economic Research, Inc.
  3. Manski, C.F., 1988. "Ordinal Utility Models Of Decision Making Under Uncertainty," Working papers 363, Wisconsin Madison - Social Systems.
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Cited by:
  1. Fischer, Ronald & Valenzuela, Patricio, 2013. "Financial openness, market structure and private credit: An empirical investigation," Economics Letters, Elsevier, vol. 121(3), pages 478-481.


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