Judges must base their decisions only on the federal and state constitutions, statutes, and earlier court decisions. this concept is called

impartiality

Explanation:

impartiality -  The principle behind the impartiality is to provide the decision based on facts and truth against the foul thing. Impartiality provides a decision that is not based on partiality, bias, any advantage of one person to others on the basis of the wrong reason.

it is true that court decision may have political consequences, it may help one but it should be base on a valid reason.

answer; lorenz;