Supreme Court Justice John Paul Stevens, the court’s staunchest liberal, said Saturday he “will surely” leave the bench before President Obama leaves office, though he has not yet decided if he will retire this year or the next. Who might replace him? There are three leading candidates, according to Bloomberg News. A source says U.S. Solicitor General Elena Kagan and two federal appellate judges—Diane Wood and Merrick Garland—are leading candidates. Both Kagan and Wood met with Obama and were leading candidates last year when the president appointed Sonia Sotomayor. Garland was one of nine finalists.