Just 6% of likely viewers of the first 2020 presidential debate say they're tuning in because they're still undecided about who to vote for. That may sound small, but 13 states saw margins smaller than 6% in 2016. CBSN political reporter Caitlin Huey-Burns and CBS News correspondent Nikole Killion join CBSN's "Red & Blue" host Elaine Quijano to discuss the stakes for the first debate between President Trump and Joe Biden.
