They either die or retire.
The real question is: Why are most supreme court justices white? The answer is either the function of a supreme court justice is best suited by a white male, or the function of electing a supreme court justice is implicit in bias.
They hold office until they either die or retire.
supreme court justices are appointed by the president' state judges are either elected or appointed by the governor
US Supreme Court justices are appointed for life and only leave office in one of the following four ways:ResignationRetirementDeathImpeachment and conviction
They are hand selected by either the President or the other justices, though it has the least requirements, extraordinary merits are needed to even be considered
Federal are often elected by voters or appointed by the president without approval of congress. Supreme Court judges are appointed with approval of congress and are on the court until they retire, die, or impeached.
A swing vote. On a larger scale, the media sometimes refers to certain states as "swing states."
Jmmn
This Power is split between two branches. Neither can act without the other in terms of Supreme Court Justices.When a Supreme Court Justice either retires;, steps down;, becomes ineligible for public office;, or dies, the President (Executive Branch) has the authority to nominate a potential replacement. However, the President does not have the power to confirm the appointment.That Power lies with the Legislative Branch, specifically, the Senate.
Supreme Court justices and other Article III federal judges receive lifetime appointments, which is designed to insulate them from public and political pressure. Most public officials are either elected for set terms, or appointed at the pleasure of the President and Congress, and usually lose their position when the administration changes.
Anything over 50% of the ones that actually vote. If a justice recuses themselves from a case, they don't count towards the total either way.