Five most liberal justices appointed by a Democratic Party president

William O. Douglas (M-Q score: −4.649; appointed by F. D. Roosevelt)

Thurgood Marshall (−2.813; Lyndon B. Johnson)

Sonia Sotomayor (−2.042; Barack Obama)

Hugo Black (−1.759; F. D. Roosevelt)

Frank Murphy (−1.587; F. D. Roosevelt)

Five most conservative justices appointed by a Democratic Party president

James C. McReynolds (3.469; Woodrow Wilson)

Sherman Minton (1.123; Harry S. Truman)

Fred M. Vinson (1.046; Harry S. Truman)

Harold H. Burton (1.045; Harry S. Truman)

Robert H. Jackson (0.698; F. D. Roosevelt)

Five most liberal justices appointed by a Republican Party president

William J. Brennan (−1.934; Dwight D. Eisenhower)

John P. Stevens (−1.821; Gerald Ford)

Benjamin N. Cardozo (−1.598; Herbert Hoover)

Earl Warren (−1.258; Dwight D. Eisenhower)

David H. Souter (−0.787; George H. W. Bush)

Five most conservative justices appointed by a Republican Party president

Clarence Thomas (3.523; George H. W. Bush)

William Rehnquist (2.948; Richard M. Nixon)

Antonin Scalia (2.468; Ronald W. Reagan)

Pierce Butler (2.221; Warren G. Harding)

Warren E. Burger (1.861; Richard M. Nixon)