CaseTrail

Justice John M. Harlan II

Voting and opinion record for John M. Harlan II in the Supreme Court Database, covering the 1954 through 1970 Terms.

2,279decisions participated in
72%in the majority
630dissenting votes
171majority opinions written

Court eras served in this data: Warren Court, Burger Court.

Majority opinions by issue area

Most often on the same side

JusticeSame sideCases together
Felix Frankfurter86.1%820
Warren E. Burger82.6%270
Charles E. Whittaker81.1%636
Harry A. Blackmun79.9%144
Potter Stewart77.9%1,833

Least often on the same side

JusticeSame sideCases together
William O. Douglas52.1%2,224
Hugo L. Black58.3%2,218
Arthur J. Goldberg59.7%444
Earl Warren60.3%1,933
Abe Fortas61.0%531

“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 (171)

Dissents in argued cases (most recent 30 of 469)

Search all opinions by Justice Harlan

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