CaseTrail

Justice John G. Roberts Jr.

Voting and opinion record for John G. Roberts Jr. in the Supreme Court Database, covering the 2005 through 2025 Terms.

Served as Chief Justice during the period SCDB labels the Roberts Court.

1,526decisions participated in
91%in the majority
139dissenting votes
150majority opinions written

Court eras served in this data: Roberts Court.

Majority opinions by issue area

Most often on the same side

JusticeSame sideCases together
Brett M. Kavanaugh94.6%501
Antonin Scalia88.5%803
Amy Coney Barrett88.4%361
Samuel A. Alito Jr.86.3%1,464
Anthony M. Kennedy86.2%1,004

Least often on the same side

JusticeSame sideCases together
John Paul Stevens61.9%399
David H. Souter67.1%307
Ruth Bader Ginsburg69.2%1,141
Ketanji Brown Jackson70.5%244
Sonia Sotomayor71.0%1,193

“Same side” means both Justices were in the majority, or both in dissent, in decisions where both voted; pairs with fewer than 50 shared decisions are left out.

Majority opinions written (150)

Dissents in argued cases (most recent 30 of 136)

Search all opinions by Justice Roberts

Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error