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Author Poole, Keith T.
Title Spatial models of parliamentary voting / Keith T. Poole.
Imprint Cambridge : Cambridge University Press, 2005.

Author Poole, Keith T.
Series Analytical methods for social research.
Analytical methods for social research.
Subject Legislative bodies -- Voting -- Decision making -- Mathematical models.
Social choice -- Mathematical models.
Description 1 online resource (xviii, 230 pages) : illustrations, tables.
Bibliography Note Includes bibliographical references and index.
Contents Introduction -- The geometry of parliamentary roll call voting -- The optimal classification method -- Probabilistic spatial models of parliamentary voting -- Practical issues in computing spatial models of parliamentary voting -- Conducting natural experiments with roll calls -- Conclusion.
Note Print version record.
Summary This book presents a simple geometric model of voting as a tool to analyze parliamentary roll call data. Each legislator is represented by one point and each roll call is represented by two points that correspond to the policy consequences of voting Yea or Nay. On every roll call each legislator votes for the closer outcome point, at least probabilistically. These points form a spatial map that summarizes the roll calls. In this sense a spatial map is much like a road map because it visually depicts the political world of a legislature. The closeness of two legislators on the map shows how similar their voting records are, and the distribution of legislators shows what the dimensions are. These maps can be used to study a wide variety of topics including how political parties evolve over time, the existence of sophisticated voting and how an executive influences legislative outcomes.
ISBN 0511130449 (electronic bk.)
9780511130441 (electronic bk.)
9780511614644 (ebook)
0511614640 (ebook)
0521851947 (Cloth)
0521617472 (pbk.)
9780521851947 (hardcover)
9780521617475 (pbk.)
OCLC # 252491269
Additional Format Print version: Poole, Keith T. Spatial models of parliamentary voting. Cambridge : Cambridge University Press, 2005 (DLC) 2005001003.

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