Mapping the Ideological Marketplace
Stanford University Department of Political Science
June 25, 2013
American Journal of Political Science, Forthcoming
I develop a method to measure the ideology of candidates and contributors using campaign finance data. Combined with a data set of over 100 million contribution records from state and federal elections, the method estimates ideal points for an expansive range of political actors. The common pool of contributors who give across institutions and levels of politics makes it possible to recover a unified set of ideological measures for members of Congress, the President and executive branch, state legislators, governors and other state officials, as well as the interest groups and individuals that make political donations. Since candidates fundraise regardless of incumbency status, the method estimates ideal points for both incumbents and non-incumbents. After establishing measure validity and addressing issues concerning strategic behavior, I present results for a variety of political actors and discuss several promising avenues of research made possible by the new measures.
Number of Pages in PDF File: 64
Keywords: ideal point estimation, ideology, campaign finance, money in politics
Date posted: October 16, 2012 ; Last revised: June 26, 2013
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