U.S. Supreme Court Ideological Representation: PNAS-Nexus Replication Data

Stephen Jessee, Malhotra, and Sen provided this replication dataset and code for their PNAS-Nexus study regarding the ideological trajectory of the U.S. Supreme Court. The collection supports the analysis of judicial representation and shifts in the court's political leanings as of 2026. It includes the specific data and processing scripts required to reproduce the findings presented in the original publication.

Use Cases

• Calculating ideological scores for Supreme Court justices to track rightward movement
• Analyzing representation metrics to compare the Court's output with public opinion
• Executing the provided replication code to verify PNAS-Nexus study coefficients

Strengths

• Includes full replication code for PNAS-Nexus study results
• Peer-reviewed research foundation from Jessee, Malhotra, and Sen
• Hosted on Harvard Dataverse ensuring long-term accessibility

Limitations

• Metadata does not specify record counts or column headers
• Requires the original PNAS-Nexus paper for full variable definitions

Provenance

Source

Jessee, Malhotra, and Sen via PNAS-Nexus

Collection Method

Replication package for academic study

Freshness

Last updated March 2026.

Geography

United States