 It's Morning Edition from NPR News. I'm Michelle Martin in Washington, D.C. And I'm A. Martinez in Culver City, California. As political announcements go, it was a stunner. President Biden said yesterday that he's given up on the Democratic nomination and dropping his run for reelection. Biden endorsed Vice President Kamala Harris to take over the top of the Democratic ticket, but it's unclear exactly how the party will proceed now. NPR senior White House correspondent Tamara Keith said,