Before revision: As of 2007, scores roughly ranged between -8 and 4, with the lowest score of about -8 attributed to William O. Douglas (tenure on the USSC from 1939 to 1975) and the highest score of about 4 attributed to Clarence Thomas (tenure from 1991 to present ).
After revision: As of 2007, scores roughly ranged between -8 and 4, with the lowest score of about -8 attributed to William O. Douglas (tenure on the USSC from 1939 to 1975) and the highest score of about 4.5 attributed to (tenure from 1972 to 2005William Rehnquist ).