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Supreme Court · Associate Justice

Ketanji Jackson

Democratic appointee: Appointed by Joseph R. Biden (D)

Served 2022–present · 3 terms

Confirmed 53–47

Biography

Ketanji Onyika Brown Jackson is an American lawyer and jurist who is an associate justice of the Supreme Court of the United States. Jackson was nominated to the U.S. Supreme Court by President Joe Biden on February 25, 2022, and confirmed by the United States Senate and sworn into office that same year. She is the first Black woman, the first former federal public defender, and the sixth woman to serve on the U.S. Supreme Court.

Source: Wikipedia, CC BY-SA 4.0

Ideology over time

K. Jackson and the 8 justices who overlapped with K. Jackson, 2022–present

−4−20+220222024More conservativeMore liberalThomasAlitoGorsuchKavanaughBarrettJ. RobertsKaganK. JacksonSotomayor
  • Ketanji Jackson
  • 95% credible interval
  • Peer, appointed by a Democrat
  • Peer, appointed by a Republican
  • Court median
How to read this

Martin–Quinn scores place each justice on a single liberal–conservative dimension, estimated from their votes across terms, with scores allowed to shift from one term to the next. Higher is more conservative. The shaded band is the credible interval: wider when the record is thin, especially in a justice’s first terms, and narrower as votes accumulate.

Where K. Jackson sits among all justices

Career average, every justice in the data set

−4−20+2+4−2.81−2.44

K. Jackson’s range across terms

Served alongside K. Jackson

8 justices

Closest career average first. Filled dot: the peer. Ring: K. Jackson.

JusticeTogetherCareer avg
Sonia Sotomayor2022–2024career average −3.27 versus K. Jackson at −2.62Elena Kagan2022–2024career average −1.74 versus K. Jackson at −2.62Brett Kavanaugh2022–2024career average 0.56 versus K. Jackson at −2.62Amy Barrett2022–2024career average 0.77 versus K. Jackson at −2.62John Roberts2022–2024career average 0.81 versus K. Jackson at −2.62Neil Gorsuch2022–2024career average 1.04 versus K. Jackson at −2.62Samuel Alito2022–2024career average 2.00 versus K. Jackson at −2.62Clarence Thomas2022–2024career average 3.40 versus K. Jackson at −2.62

How K. Jackson voted

Every argued case K. Jackson took part in, newest first, with how K. Jackson voted in each: with the majority, in dissent, or in an equally divided Court. A Liberal or Conservative tag is the Supreme Court Database’s coding of who prevailed in the case, not a rating of the justices.

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    Data notes

    The Decisions page’s argued cases with this justice’s vote from the Supreme Court Database. “Majority” includes a concurrence; a vote that dissented in part is coded by the side the justice took overall. Cases the justice sat out and equally divided cases are left out of the percentages. “Wrote” means authored an opinion. Source: Supreme Court Database (Spaeth et al.).

    Report a correction

    Scores: Martin, Andrew D. and Kevin M. Quinn. 2002. “Dynamic Ideal Point Estimation via Markov Chain Monte Carlo for the U.S. Supreme Court, 1953–1999.” Political Analysis 10:134–153, from mqscores.wustl.edu. Appointment data: Federal Judicial Center biographical directory. Biographies: Wikipedia, text abridged, under CC BY-SA 4.0. Portraits: public-domain images via Wikimedia Commons.