Cameron Showed `Bad Judgment' Over Coulson

July 19 (Bloomberg) -- Alastair Campbell, former communications chief for Tony Blair, discusses Prime Minister David Cameron's links to former News of the World editor Andy Coulson. Campbell, speaking with Poppy Trowbridge on Bloomberg Television's "The Pulse," also talks about the outlook for today's appearances by News Corp.'s Rupert and James Murdoch before a U.K. parliamentary select committee. (Source: Bloomberg)