CNN's John King joined Boston Public Radio on Tuesday to speak about Super Tuesday elections and Sen. Elizabeth Warren's odds at advancing.

"[Warren] has a lot to prove today. ... She has to come away today with delegates or else I think they have to have a tough conversation," he said. "Her campaign is very top heavy, they invested heavily in a big staff, so she burns through a lot of money paying her staff; and so if you don't prove that that's worth it, you don't start to perform, it's tough."

John King is CNN’s chief National Correspondent and anchor of Inside Politics, which you can catch Sunday mornings at 8 a.m. and weekdays at noon.