Democrats and Republicans are donating billions to back candidates in November’s election. So far, the 2024 US election has been defined by surprises and unprecedented moments. But if one thing is certain, it's that the election will cost a lot of money. Donors from both major parties are donating billions of dollars in the hopes of seeing their candidates win the White House and hundreds of local races. So, what is all that money spent on? And what impact is it having on US politics?

Katya Adler speaks to the BBC’s correspondent in Washington DC, Anthony Zurcher, and Matt Foster from American University, also in the capital.

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