get official word from justice breyer himself. so, let s bring in abc s senior white house correspondent mary bruce tonight. mary, i want to go back to what we heard from then candidate joe biden, what he said about who he would nominate to the supreme court. let s listen. i m looking forward to making sure there s a black woman on the supreme court to make sure we in fact get every representation. that was just before he won south carolina. mary, there s already a short list of potential nominees? reporter: there is, david, and the white house today says the president is standing by that promise to nominate the first black woman to be on the supreme court. tonight, the front-runner is believed to be judge kattan gee brown jackson, a former clerk of justice breyer s and she s already gone through the senate confirmation process when she was confirmed to the powerful d.c. circuit court of appeals. also believed to be on the list tonight, judge leon dra krueger of the california su