Lawrence O'Donnell is the host of MSNBC’s The Last Word. He was formerly the chief of staff for both the U.S. Senate Committee on Finance and the Committee on Environment & Public Works in the 1990's. He is also an actor, and has been executive producer of the television shows The West Wing and Mister Sterling. O'Donnell blogs at the Huffington Post as well. In the past, O'Donnell has described himself as a socialist.