Sen. Cory Booker weighed in on Julian Castro saying Biden is too old to be president during CNN's post-debate coverage, saying it is not Biden's age that is the problem.



"Look, I've listened to Joe Biden over the years and often thought there were times he was going on or was meandering in his speech," Booker said.



"There were a lot of moments where a number of us on stage were looking at him, each other, where [Biden] tends to go on sometimes. At one point he's talking about people in communities like mine listening to record players... Vinyl is hot right now, maybe he's cooler than I am, but there are definitely moments where you listen to Joe Biden and just wonder."



"I think Castro had some legitimate concerns about, can [Biden] be someone in a long grueling campaign who can get the ball over the line," he also said.