The Last Word with Lawrence O'Donnell 07/20/15

What if Trump runs on a Third Party ticket?

Donald Trump won't rule out a third-party run for President, and a new poll today shows he would take votes from Jeb Bush in that scenario, possibly helping Hillary Clinton. Lawrence discusses this with EJ Dionne, Caitlin Huey-Burns, and Patrick Murphy. ... more Duration: {{video.duration.momentjs}}