There is new and significant polling from the swing states which is energising the Democratic campaign. But beyond the headline numbers, what do the polls tell us about how long Kamala Harris’s boost in popularity might last?

This week Justin and Sarah look at what voters in swing states think about both candidates, and how they decide to who to vote for.

Ruth Igielnik, Polling Editor for the New York Times, gives us a behind the scenes insight into the accuracy of polls.

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This episode was made by Purvee Pattni with Rufus Gray, Catherine Fusillo and Claire Betzer. The technical producer was Michael Regaard. The series producer is Purvee Pattni. The senior news editor is Sam Bonham.

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