 Biden spoke and took questions for nearly an hour, with one notable gaffe at the top, where he said Trump rather than Harris when referring to his vice president. On whether to hand it off to a younger generation, Biden said he has more left to do. I've got to finish this job. I've got to finish this job because there's so much at stake. Biden said he believes democracy itself is on the line this election. Tamara Keith, NPR News, Washington.