They were once rivals. Rubio is now helping Trump with debate prep

GOP debate coach Brett O’Donnell joins CNN’s Anderson Cooper to discuss what’s ahead for both candidates ahead of the first presidential debate of the 2024 election cycle. #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:
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