New Data on State Supreme Court Cases

Abstract

The study of U.S. state supreme courts has been significantly constrained by a lack of available data. To remedy this deficiency, this article introduces an original data set of every state supreme court ruling from 1995 through 2010. We utilize automated textual analysis to search the text of thousands of state supreme court decisions and extract critical information on each case. This automated coding approach produces reliable measures of state supreme court decision making when compared with data collected by human coders. We present trends in docket size, dissent rates, and legal issues being heard in front of the court. This new data set will offer scholars numerous opportunities to expand our knowledge of judicial politics in the American states.

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