Taylor Swift has endorsed Kamala Harris – but what difference is it likely to make, in terms of persuading the undecideds, and getting new voters registered?
BBC Americast also looks back at the history behind celebrity endorsements from Frank Sinatra’s backing of JFK to Bruce Springsteen and Ronald Reagan, what motivates a star to back a politician? When does an endorsement backfire?
Justin Webb, Sarah Smith and Marianna Spring speak to Tyler Foggatt, a senior editor at The New Yorker magazine.
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