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A Spatial Model for Legislative Roll Call Analysis

Poole, Keith T. and Rosenthal, Howard (1983) A Spatial Model for Legislative Roll Call Analysis. Social Science Working Paper, 488. California Institute of Technology , Pasadena, CA. (Unpublished)

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A general nonlinear logit model is used to analyze political choice data. The model assumes probabilistic voting based on a spatial utility function. The parameters of the utility function and the spatial coordinates of the choices and the choosers can all be estimated on the basis of observed choices. Ordinary Guttman scaling is a degenerate case of this model. Estimation of the model is implemented in the NOMINATE program for one dimensional analysis of two alternative choices with no nonvoting. The robustness and face validity of the program outputs are evaluated on the basis of roll call voting data for the U.S. House and Senate. Extensive Monte Carlo studies are also presented. Substantive applications using the results for the Senate are briefly illustrated.

Item Type:Report or Paper (Working Paper)
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Additional Information:This work was initiated while Poole was a Political Economy Fellow at Carnegie-Mellon and completed while Rosenthal was a Fairchild Scholar at Caltech. We also acknowledge the substantial computational support of the Graduate School of Industrial Administration at Carnegie-Mellon. This version of the paper has benefited from seminars at Caltech and Stanford. Published as Poole, Keith T., and Howard Rosenthal. "A spatial model for legislative roll call analysis." American Journal of Political Science (1985): 357-384.
Group:Social Science Working Papers
Funding AgencyGrant Number
Carnegie Mellon UniversityUNSPECIFIED
Sherman Fairchild FoundationUNSPECIFIED
Subject Keywords:Legislators, Voting, Coordinate systems, Mathematical models, Geometric mean, Spatial models, Modeling, Congressional voting, Senators, Utility functions
Series Name:Social Science Working Paper
Issue or Number:488
Record Number:CaltechAUTHORS:20170921-160401399
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:81716
Deposited By: Jacquelyn Bussone
Deposited On:22 Sep 2017 17:55
Last Modified:03 Oct 2019 18:46

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