Analyst: Why this debate is going to matter

CNN senior political analyst Ron Brownstein joins CNN Newsroom to discuss why he thinks the ABC debate between presidential candidates Donald Trump and Kamala Harris is going to matter, and what it means for each candidate. #CNN #news Want to stay up to date on the day's top stories? Sign up for CNN's 5 Things newsletter, and we'll give you the 5 biggest stories you need to know, videos people are watching, and more! Sign up here: https://www.cnn.com/newsletters/5-things?source=nl-acq_social_youtubedesc&utm_source=nl-acq_social_youtubedesc