 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. In Arizona, officials say at least three children have died following separate heat-related emergencies. For Member Station KJZZ, Catherine Davis-Young has more.