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Sonia Sotomayor

Sonia Sotomayor

Associate Justice of the U.S. Supreme Court · Appointed by Barack Obama (Democratic)

-4.19MQ score (2024 term)Martin-Quinn: negative = more liberal, positive = more conservative. Different scale from the Congress score.
73%In majority (2025 term)Share of the 66 cases they took part in where they were on the winning side.
27%Dissented (2025 term)Share of cases where they voted against the majority.
6Majority opinions (2025)Signed majority opinions they wrote; unsigned (per curiam) decisions aren't counted.

Took seat Aug 8, 2009 · Confirmed 68–31 on Aug 6, 2009 (Senate roll call #262, 111th Congress) · Born 1954, NY

supremecourt.gov biography · supremecourt.gov list of justices · FJC biography · Wikipedia · Portrait: Wikimedia Commons

Left–right score over time

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The colored line is Sonia Sotomayor's Martin-Quinn score each term (shaded band = the range the estimate is 95% likely to fall in); faint lines are the other current justices. Left = more liberal, right = more conservative. This is a different scale from the Congress score (roughly −4 to +4) and can't be compared with lawmakers' scores.

19911995200020052010201520202024-5-4-3-2-10+1+2+3+4+5John G. Roberts, Jr., 2005 term: +1.39John G. Roberts, Jr., 2006 term: +1.43John G. Roberts, Jr., 2007 term: +1.41John G. Roberts, Jr., 2008 term: +1.50John G. Roberts, Jr., 2009 term: +1.40John G. Roberts, Jr., 2010 term: +1.40John G. Roberts, Jr., 2011 term: +1.20John G. Roberts, Jr., 2012 term: +1.11John G. Roberts, Jr., 2013 term: +0.80John G. Roberts, Jr., 2014 term: +0.59John G. Roberts, Jr., 2015 term: +0.33John G. Roberts, Jr., 2016 term: +0.35John G. Roberts, Jr., 2017 term: +0.40John G. Roberts, Jr., 2018 term: +0.41John G. Roberts, Jr., 2019 term: +0.34John G. Roberts, Jr., 2020 term: +0.52John G. Roberts, Jr., 2021 term: +0.55John G. Roberts, Jr., 2022 term: +0.42John G. Roberts, Jr., 2023 term: +0.43John G. Roberts, Jr., 2024 term: +0.33Clarence Thomas, 1991 term: +2.74Clarence Thomas, 1992 term: +3.04Clarence Thomas, 1993 term: +3.41Clarence Thomas, 1994 term: +3.63Clarence Thomas, 1995 term: +3.73Clarence Thomas, 1996 term: +3.80Clarence Thomas, 1997 term: +3.79Clarence Thomas, 1998 term: +3.81Clarence Thomas, 1999 term: +3.76Clarence Thomas, 2000 term: +3.78Clarence Thomas, 2001 term: +3.73Clarence Thomas, 2002 term: +3.87Clarence Thomas, 2003 term: +3.89Clarence Thomas, 2004 term: +3.93Clarence Thomas, 2005 term: +3.96Clarence Thomas, 2006 term: +3.92Clarence Thomas, 2007 term: +3.77Clarence Thomas, 2008 term: +3.51Clarence Thomas, 2009 term: +3.38Clarence Thomas, 2010 term: +3.21Clarence Thomas, 2011 term: +3.17Clarence Thomas, 2012 term: +3.12Clarence Thomas, 2013 term: +3.15Clarence Thomas, 2014 term: +3.15Clarence Thomas, 2015 term: +3.17Clarence Thomas, 2016 term: +3.18Clarence Thomas, 2017 term: +3.08Clarence Thomas, 2018 term: +3.11Clarence Thomas, 2019 term: +3.06Clarence Thomas, 2020 term: +2.87Clarence Thomas, 2021 term: +2.94Clarence Thomas, 2022 term: +2.95Clarence Thomas, 2023 term: +3.07Clarence Thomas, 2024 term: +3.07Samuel A. Alito, Jr., 2005 term: +1.42Samuel A. Alito, Jr., 2006 term: +1.46Samuel A. Alito, Jr., 2007 term: +1.55Samuel A. Alito, Jr., 2008 term: +1.81Samuel A. Alito, Jr., 2009 term: +1.85Samuel A. Alito, Jr., 2010 term: +1.99Samuel A. Alito, Jr., 2011 term: +2.00Samuel A. Alito, Jr., 2012 term: +1.99Samuel A. Alito, Jr., 2013 term: +1.93Samuel A. Alito, Jr., 2014 term: +1.75Samuel A. Alito, Jr., 2015 term: +1.66Samuel A. Alito, Jr., 2016 term: +1.87Samuel A. Alito, Jr., 2017 term: +2.09Samuel A. Alito, Jr., 2018 term: +2.06Samuel A. Alito, Jr., 2019 term: +2.30Samuel A. Alito, Jr., 2020 term: +2.40Samuel A. Alito, Jr., 2021 term: +2.44Samuel A. Alito, Jr., 2022 term: +2.49Samuel A. Alito, Jr., 2023 term: +2.49Samuel A. Alito, Jr., 2024 term: +2.50Elena Kagan, 2010 term: -1.44Elena Kagan, 2011 term: -1.43Elena Kagan, 2012 term: -1.68Elena Kagan, 2013 term: -1.64Elena Kagan, 2014 term: -1.69Elena Kagan, 2015 term: -1.58Elena Kagan, 2016 term: -1.63Elena Kagan, 2017 term: -1.68Elena Kagan, 2018 term: -1.70Elena Kagan, 2019 term: -1.80Elena Kagan, 2020 term: -1.88Elena Kagan, 2021 term: -2.00Elena Kagan, 2022 term: -2.07Elena Kagan, 2023 term: -2.06Elena Kagan, 2024 term: -1.84Neil M. Gorsuch, 2016 term: +1.13Neil M. Gorsuch, 2017 term: +1.06Neil M. Gorsuch, 2018 term: +0.97Neil M. Gorsuch, 2019 term: +0.92Neil M. Gorsuch, 2020 term: +1.07Neil M. Gorsuch, 2021 term: +1.00Neil M. Gorsuch, 2022 term: +1.06Neil M. Gorsuch, 2023 term: +1.09Neil M. Gorsuch, 2024 term: +1.08Brett M. Kavanaugh, 2018 term: +0.60Brett M. Kavanaugh, 2019 term: +0.56Brett M. Kavanaugh, 2020 term: +0.57Brett M. Kavanaugh, 2021 term: +0.63Brett M. Kavanaugh, 2022 term: +0.47Brett M. Kavanaugh, 2023 term: +0.51Brett M. Kavanaugh, 2024 term: +0.55Amy Coney Barrett, 2020 term: +0.96Amy Coney Barrett, 2021 term: +1.00Amy Coney Barrett, 2022 term: +0.74Amy Coney Barrett, 2023 term: +0.60Amy Coney Barrett, 2024 term: +0.52Ketanji Brown Jackson, 2022 term: -2.44Ketanji Brown Jackson, 2023 term: -2.62Ketanji Brown Jackson, 2024 term: -2.81Sonia Sotomayor, 2009 term: -1.63Sonia Sotomayor, 2010 term: -1.71Sonia Sotomayor, 2011 term: -1.90Sonia Sotomayor, 2012 term: -2.36Sonia Sotomayor, 2013 term: -2.69Sonia Sotomayor, 2014 term: -3.01Sonia Sotomayor, 2015 term: -3.27Sonia Sotomayor, 2016 term: -3.48Sonia Sotomayor, 2017 term: -3.73Sonia Sotomayor, 2018 term: -3.85Sonia Sotomayor, 2019 term: -3.97Sonia Sotomayor, 2020 term: -4.08Sonia Sotomayor, 2021 term: -4.15Sonia Sotomayor, 2022 term: -4.14Sonia Sotomayor, 2023 term: -4.17Sonia Sotomayor, 2024 term: -4.19Sotomayor← More liberalMore conservative →

By term

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TermMQ score95% rangeCasesIn majorityDissented
2025No score yet6673%27%
2024-4.19-5.67 to -2.806379%21%
2023-4.17-5.58 to -2.895971%29%
2022-4.14-5.51 to -2.945883%17%
2021-4.15-5.39 to -3.046458%42%
2020-4.08-5.23 to -3.066572%28%
2019-3.97-5.10 to -2.966175%25%
2018-3.85-4.88 to -2.927377%23%
2017-3.73-4.79 to -2.837572%28%
2016-3.48-4.47 to -2.596888%12%
2015-3.27-4.21 to -2.387682%18%
2014-3.01-3.90 to -2.167489%11%
2013-2.69-3.54 to -1.897481%19%
2012-2.36-3.10 to -1.647878%22%
2011-1.90-2.67 to -1.267680%20%
2010-1.71-2.42 to -1.097980%20%
2009-1.63-2.33 to -0.978780%20%

Since joining the Court: in the majority in 78% and dissenting in 22% of 1196 cases (case data from 1991).

Recent votes (latest 60 of 1220)

DecidedCaseTheir voteSplitMajority opinion by
2026-06-30NATIONAL REPUBLICAN SENATORIAL COMMITTEE v. FEDERAL ELECTION COMMISSIONDissent6–3Kavanaugh
2026-06-30TRUMP v. BARBARAConcurrence6–3Roberts
2026-06-30WEST VIRGINIA v. B.P.J.Dissent6–3Kavanaugh
2026-06-29CHATRIE v. UNITED STATESConcurrence6–3Kagan
2026-06-29TRUMP v. COOKMajority5–4Roberts
2026-06-29TRUMP v. SLAUGHTERDissent6–3Roberts
2026-06-29WATSON v. REPUBLICAN NATIONAL COMMITTEEMajority5–4Barrett
2026-06-25MONSANTO COMPANY v. DURNELLMajority7–2Kavanaugh
2026-06-25MULLIN v. AL OTRO LADODissent6–3Alito
2026-06-25MULLIN v. DOEDissent6–3Alito
2026-06-25WOLFORD v. LOPEZDissent6–3Alito
2026-06-23BLANCHE v. LAUDissent6–3Thomas
2026-06-23CISCO SYSTEMS v. DOEDissent6–3Barrett
2026-06-23EXXON MOBIL CORP. v. CORPORACION CIMEX, S.A.Dissent6–3Kavanaugh
2026-06-23LANDOR v. LOUISIANA DEPARTMENT OF CORRECTIONS AND PUBLIC SAFETYDissent6–3Gorsuch
2026-06-23PUNG v. ISABELLA COUNTY, MICHIGANConcurrence9–0Alito
2026-06-22MCCARTHY v. HERNANDEZDissent (jurisdictional)6–3Unsigned / not listed
2026-06-18HUNTER v. UNITED STATESConcurrence8–1Kagan
2026-06-18T. M. v. UNIVERSITY OF MARYLAND MEDICAL SYSTEM CORP.Majority5–4Sotomayor
2026-06-18UNITED STATES v. HEMANIConcurrence9–0Gorsuch
2026-06-11ABOUAMMO v. UNITED STATESMajority9–0Kagan
2026-06-11FS CREDIT OPPORTUNITIES CORP. v. SABA CAPITAL MASTER FUND, LTD.Dissent6–3Barrett
2026-06-11KEATHLEY v. BUDDY AYERS CONSTRUCTIONConcurrence9–0Jackson
2026-06-04FEDERAL COMMUNICATIONS COMMISSION v. AT&TMajority8–1Roberts
2026-06-04HIKMA PHARMACEUTICALS USA INC. v. AMARIN PHARMAMajority9–0Jackson
2026-06-04SRIPETCH v. SECURITIES AND EXCHANGE COMMISSIONMajority9–0Gorsuch
2026-06-01WHITTON v. DIXONMajority7–2Unsigned / not listed
2026-05-28FERNANDEZ v. UNITED STATESConcurred in judgment8–1Barrett
2026-05-28FLOWER FOODS v. BROCKMajority9–0Gorsuch
2026-05-28PITCHFORD v. CAINMajority5–4Kavanaugh
2026-05-28RUTHERFORD v. UNITED STATESDissent6–3Barrett
2026-05-26MARGOLIN v. NATIONAL ASSOCIATION OF IMMIGRATION JUDGESMajority9–0Unsigned / not listed
2026-05-21HAMM v. SMITHConcurrence5–4Unsigned / not listed
2026-05-21HAVANA DOCKS CORPORATION v. ROYAL CARIBBEAN CRUISES, LTD.Concurrence8–1Thomas
2026-05-21M & K EMPLOYEE SOLUTIONS, LLC v. TRUSTEES OF THE IAM NATIONAL PENSION FUNDMajority9–0Jackson
2026-05-14JULES v. ANDRE BALAZS PROPERTIESMajority9–0Sotomayor
2026-05-14MONTGOMERY v. CARIBE TRANSPORT II, LLCMajority9–0Barrett
2026-04-29FIRST CHOICE WOMEN’S RESOURCE CENTERS v. DAVENPORTMajority9–0Gorsuch
2026-04-29LOUISIANA v. CALLAISDissent6–3Alito
2026-04-22ENBRIDGE ENERGY, LP v. NESSELMajority9–0Sotomayor
2026-04-22HENCELY v. FLUOR CORPORATIONMajority6–3Thomas
2026-04-20DISTRICT OF COLUMBIA v. R.W.Dissent (jurisdictional)7–2Unsigned / not listed
2026-04-17CHEVRON USA INC. v. PLAQUEMINES PARISH, LOUISIANAMajority8–0Thomas
2026-03-31CHILES v. SALAZARConcurrence8–1Gorsuch
2026-03-25COX COMMUNICATIONS v. SONY MUSIC ENTM'TConcurred in judgment9–0Thomas
2026-03-25RICO v. UNITED STATESMajority8–1Gorsuch
2026-03-23ZORN v. LINTONDissent6–3Unsigned / not listed
2026-03-20OLIVIER v. CITY OF BRANDON, MISSISSIPPIMajority9–0Kagan
2026-03-04GALETTE v. NEW JERSEY TRANSIT CORPORATIONMajority9–0Sotomayor
2026-03-04URIAS-ORELLANA v. BONDIMajority9–0Jackson
2026-02-25THE GEO GROUP v. MENOCALMajority9–0Kagan
2026-02-25VILLARREAL v. TEXASMajority9–0Jackson
2026-02-24THE HAIN CELESTIAL GROUP v. PALMQUISTMajority9–0Sotomayor
2026-02-24U.S. POSTAL SERVICE v. KONANDissent5–4Thomas
2026-02-20LEARNING RESOURCES v. TRUMPConcurred in judgment6–3Roberts
2026-01-26KLEIN v. MARTINMajority8–1Unsigned / not listed
2026-01-20BERK v. CHOYMajority9–0Barrett
2026-01-20CONEY ISLAND AUTO PARTS UNLIMITED, INC. v. BURTONConcurred in judgment9–0Alito
2026-01-20ELLINGBURG v. UNITED STATESMajority9–0Kavanaugh
2026-01-14BARRETT v. UNITED STATESMajority9–0Jackson

Case votes: Supreme Court Database (SCDB_2026_01, covering terms 1946-2025; this site uses 1985–2025) plus the Oyez API for newer terms (October Term 2026: Oyez lists 31 cases, 0 decided so far). Ideology: Martin-Quinn scores through the 2024 term.