Ex-Rubio campaign adviser on candidate strategies for presidential debates.

President Trump and Joe Biden go head-to-head in Cleveland on Tuesday night for the first presidential debate. Lanhee Chen, a fellow at Stanford University's Hoover Institution and former policy director to the Romney-Ryan 2012 campaign as well as a senior adviser to Marco Rubio's 2016 presidential bid, joins CBSN's Elaine Quijano on "Red and Blue" with his analysis on how to prep for debate night.

Watch video on channel "CBS News"

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