radio network. to the democrats. the interview everyone is talking about. we're talking about the vice president, joe biden. raw, emotional, visibly torn as he spoke to stephen colbert about launching a presidential run. our senior political correspondent brianna keilar has that part of the story for us. it was a very very emotional vice president. tell our vars what he said. >> he told stephen colbert he's getting by at this really difficult time by saying the rosery by relying on god, on messages and quotes his wife jill tapes on his bathroom mirror while he is shaving. he was very open in this interview with stephen colbert and it's clear he is struggling as he grieves for his son beau. >> dad, i know how much you love me so you've got to promise me something, promise me you're going to be all right. because no matter what happens, dad, i'm going to be all right. >> reporter: vice president joe biden's most emotional interview yet since his son beau's death