James Carville suggests Kamala Harris is more vulnerable than happy Democrats think: 'Tough sledding ahead'

Democratic strategist James Carville warned members of his party to be "careful" in their support for Vice President Harris, and said there was "tough sledding ahead."

"This has been a real change in mood in the party and around the country, but we got to be a little careful. There's about ten percent too much triumphalism going on, and you know, it’s going to be a very difficult race," Carville said during a Wednesday interview on MSNBC's "Morning Joe."

"It’s going to be very close...