Clarence Thomas

Associate Justice since 1991 and the Court's longest-serving current member. He previously sat on the D.C. Circuit and chaired the Equal Employment Opportunity Commission.

Role
Associate Justice
Joined the Court
1991 (appointed by George H. W. Bush)
Martin–Quinn score
3.07 (latest term)
Decisions participated in
2,667 (Spaeth, 1946–2025 span)
Prior roles
Judge, U.S. Court of Appeals for the D.C. Circuit; Chairman, Equal Employment Opportunity Commission

How their votes have evolved, issue by issue

Before the Court

As a lower-court judge on the D.C. Circuit (1990–1991), Thomas wrote 23 opinions we could find on CourtListener: 19 for the court, 3 concurring and 1 dissenting. Most often on: Executive & agency power (7), Criminal procedure (3), Free speech & press (1). Selected passages appear in the “In their own words” timelines on this page.

How they question at oral argument

Over OT2023–OT2025 (1,232 substantive questions and remarks), Thomas's questions most often probed the text (24%), the facts and record (19%), consequences and hypotheticals (18%). Themes are assigned by a language model (75% agreement with independent reference labels). Compare all nine Justices.

Public statements, writings & appearances

A curated, sourced timeline of 25 speeches, articles, interviews, and public statements — each with a summary and a link to the original source. The interactive version with filters and full-text search loads above.

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