The political leanings of the Supreme Court justices

The Supreme Court will continue to have a solid conservative majority even with Justice Stephen Breyer's retirement.

How to read the chart: An analysis by political scientists Andrew Martin and Kevin Quinn, known as the Martin-Quinn Score, places judges on an ideological spectrum. A lower score indicates a more liberal justice, whereas a higher score indicates a more conservative justice.

Breyer had the second-most liberal score (-1.901), with Justice Sonia Sotomayor being the most liberal (-3.959), per a measure that score judges on a liberal-conservative spectrum.

• Most liberal: Sonia Sotomayor (-3.959)
• Stephen Breyer (-1.901)
• Elena Kagan (-1.508)
• John Roberts (0.506)
• Brett Kavanaugh (0.548)
• Amy Coney Barrett (1.011)
• Neil Gorsuch (1.11)
• Samuel Alito (2.162)
• Most conservative: Clarence Thomas (3.03)

How justices voted on Roe v. Wade

• The Supreme Court issued a 6-3 ruling overturning Roe on June 24.
• Alito wrote the court's opinion. Joining him were Thomas, Gorsuch, Kavanaugh and Barrett.
• Roberts voted with the majority but indicated he would've stopped short of fully overturning Roe.
• The court's three liberal members — Breyer, Sotomayor and Kagan — dissented.

Editor's note: This story has been updated to include Amy Coney Barrett, using a new analysis and scoring system, and information on how the justices voted on Roe v. Wade.