experience it touches us all. we all get older. >> it was an issue on stage before cnn asked it as a question. it's something i think everyone was thinking about. >> well, and i think maybe bernie's heart attack sort of brought it out. >> it did. it made it an issue issue. >> but i think the truth is the top three candidates are all -- the three oldest candidates. >> and the person -- >> the top four candidates if you count the president. >> exactly. they'd be running against the president in his 70s. >> you've got president that is older than elizabeth but slightly younger than biden and bernie. so the top four people that are competing for this the most difficult absolute exhausting job on the planet are all in their 70s. >> and at the same time you have a slate of very young candidates. you have gabbert. you have buttigieg, you have booker, you have castro, all of whom could claim the mantle of a younger, next generation of leadership. and what i found so interesting