PRESIDENT BIDEN STEPS ASIDE, ENDORSES VP KAMALA HARRIS.

TERRY MORAN (ABC NEWS) (Off-camera) Good morning, Martha. It's hard to believe that it's been just a week since President Biden ended his bid for election and transformed this campaign. And now with Vice president Harris having basically locked up the Democratic nomination for president, this race for the White House has been radically transformed, a brand-new ball game with just 100 days to go until Election Day. [ABSTRACT FROM PUBLISHER]