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Comparing Legislators and Legislatures: The Dynamics of Legislative Gridlock Reconsidered

Published online by Cambridge University Press:  21 August 2007

Fang-Yi Chiou
Affiliation:
Institute of Political Science, Academia Sinica, 128 Academia Road, Taipei, Taiwan, e-mail: [email protected]
Lawrence S. Rothenberg*
Affiliation:
Department of Political Science, University of Rochester, Rochester, NY 14627
*
e-mail: [email protected] (corresponding author)

Abstract

Although political methodologists are well aware of measurement issues and the problems that can be created, such concerns are not always front and center when we are doing substantive research. Here, we show how choices in measuring legislative preferences have influenced our understanding of what determines legislative outputs. Specifically, we replicate and extend Binder's highly influential analysis (Binder, Sarah A. 1999. The dynamics of legislative gridlock, 1947–96. American Political Science Review 93:519–33; see also Binder, Sarah A. 2003. Stalemate: Causes and consequences of legislative gridlock. Washington, DC: Brookings Institution) of legislative gridlock, which emphasizes how partisan, electoral, and institutional characteristics generate major legislative initiatives. Binder purports to show that examining the proportion, rather than the absolute number, of key policy proposals passed leads to the inference that these features, rather than divided government, are crucial for explaining gridlock. However, we demonstrate that this finding is undermined by flaws in preference measurement. Binder's results are a function of using W-NOMINATE scores never designed for comparing Senate to House members or for analyzing multiple Congresses jointly. When preferences are more appropriately measured with common space scores (Poole, Keith T. 1998. Recovering a basic space from a set of issue scales. American Journal of Political Science 42:964–93), there is no evidence that the factors that she highlights matter.

Type
Research Article
Copyright
Copyright © The Author 2007. Published by Oxford University Press on behalf of the Society for Political Methodology 

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Footnotes

Authors' note: Thanks to Sarah Binder and Keith Poole for furnishing data used in our analysis and to Chris Achen and Kevin Clarke for advice. All errors remain our own. Online appendix is available on the Political Analysis Web site.

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Chiou and Rothenberg Supplementary Material

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