analysis. the cbs evening news starts now. the debate that could mark a turning point in the race for president, just five months from election day. good evening. i m norah o donnell, in new york tonight, and thank you for being with a spear millions arcs back to tune in for the matchup between president joe biden and former president donald trump. the two meeting at the earliest presidential debate in history. it is a chance for voters to hear the candidates vastly different visions for the future for america, and the contrast between the two cannot be more stark in both policies and personalities. the one thing they have in common, however, is age. president biden is 81 years old, and donald trump is 78, making them the oldest candidates to ever meet on the debate stage, and you can bet that will be a topic that we have team coverage, starting with cbs s nancy cordes in atlanta. reporter: president biden was embraced by supporters after touching down in atlanta this