A Bayesian spatial voting model to characterize the legislative behavior of the Colombian Senate 2010–2014

Carolina Luque and Juan Sosa

Journal of Applied Statistics, 2023, vol. 50, issue 16, 3362-3383

Abstract: This paper characterizes the legislators voting behavior in the Colombian Senate 2010–2014, by implementing a one-dimensional standard Bayesian ideal point estimator via Markov chain Monte Carlo algorithms. Our main goal is to retrieve the political preferences of legislators from their roll-call voting records, which individualizes the electoral behavior of the legislative chamber. Furthermore, we conclude about the nature of the latent trait underlying the deputies voting decisions and the legislators locations in political space. Finally, we also offer several methodological and theoretical tools to guide the analysis of nominal voting data in the context of unbalanced parliaments (multi-party systems), taking as reference the particular case of the Colombian Senate.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:taf:japsta:v:50:y:2023:i:16:p:3362-3383

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DOI: 10.1080/02664763.2022.2111678

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