Opinions of the Supreme Court of the US (00075)
The dataset is based on the opinions authored and joined by the justices betwen 1946 and 2021, derived from the Supreme Court Database. The Court consists of 9 justices who vote on each case about which of the two parties to the case wins. The Court then publishes a majority opinion explaining the Court’s reasoning. Justices can also submit concurring opinions and dissenting opinions, and join any of the opinions submitted by others. Concurring opinions explain additional or alternative reasons, written by justices who voted with the majority. Dissenting opinions explain why a justice did not vote with the majority. Note that there might be several dissenting and concurring opinions. Each opinion, concurrence, or dissent becomes a ballot “approving” the justices that joined in it. The data was converted to the appropriate format by Théo Delemazure.
Required citations: Harold J. Spaeth, Lee Epstein, Andrew D. Martin, Jeffrey A. Segal, Theodore J. Ruger and Sara C. Benesh. 2023 Supreme Court Database, Version 2023 Release 01. URL: http://supremecourtdatabase.org.
Selected studies: Comparing Ways of Obtaining Candidate Orderings from Approval Ballots (2025). Théo Delemazure, Chris Dong, Dominik Peters, and Magdalena Tydrichova. In Proceedings of the Thirty-Third International Joint Conference on Artificial Intelligence (IJCAI).