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Electoral Competition in 2-Dimensional Ideology Space with Unidimensional Commitment

Dziubinski, Marcin and Roy, Jaideep (2009) Electoral Competition in 2-Dimensional Ideology Space with Unidimensional Commitment. Working Paper. The Department of Economics, Lancaster University.

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    Abstract

    We study a model of political competition between two candidates with two orthogonal issues, where candidates are office motivated and committed to a particular position in one of the dimensions, while having the freedom to select (credibly) any position on the other dimension. We analyse two settings: a homogeneous one, where both candidates are committed to the same dimension and a heterogeneous one, where each candidate is committed to a different dimension. We characterise and give necessary and suffcient conditions for existence of convergent and divergent Nash equilibria for distributions with a non-empty and an empty core. We identify a special point in the ideology space which we call a strict median, existence of which is strictly related to existence of divergent Nash equilibria. A central conclusion of our analysis is that for divergent equilibria, strong extremism (or differentiation) seems to be an important equilibrium feature.

    Item Type: Monograph (Working Paper)
    Uncontrolled Keywords: Spatial Voting ; Two Issues ; Uni-Dimensional Commitment ; StrictMedian ; Extremism
    Subjects: UNSPECIFIED
    Departments: Lancaster University Management School > Economics
    ID Code: 48944
    Deposited By: ep_importer_pure
    Deposited On: 11 Jul 2011 22:23
    Refereed?: No
    Published?: Published
    Last Modified: 27 Jul 2012 01:18
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/48944

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