Biden's Pitch: Light Over Darkness
b"Joe Biden closes the Democratic Convention with a powerful speech outlining his vision for the campaign. CNN Political Director David Chalian breaks that down and previews next week's Republican Convention. Plus, the Postmaster General in the hot seat on Capitol Hill.\\xa0\\nTo learn more about how CNN protects listener privacy, visit cnn.com/privacy\\nLearn more about your ad choices. Visit megaphone.fm/adchoices"