Pennsylvania constitution
Article V: the judiciary
Section 19

The present president judge of the court of common pleas may complete his term as president judge; the present president judge of the orphans' court shall be the president judge of the orphans' court division of the court of common pleas for the remainder of his term as president judge, and the present president judge of the county court shall be the president judge of the family court division of the court of common pleas for the remainder of his term as president judge, all these without diminution of salary as president judge. The president judge of the trial division shall be selected pursuant to section twenty of this schedule.