Former Trump WH Comms Director on the upcoming debate: “If [Trump] can stay focused… it’s a good night for him.”

CNN Political Commentators Alyssa Farah Griffin and Bakari Sellers, Republican Strategist Bryan Lanza and Democratic Strategist Doug Thornell join CNN’s Dana Bash to preview the firs time Donald Trump and Kamala Harris face off at the presidential debate and the shocking announcement from a former Republican Vice President.