Kamala Harris raised a hundred million dollars in the day and a half since Joe Biden announced he wouldn't be standing for re-election.
She has now passed the delegate threshold to stand as the candidate - and as we record no one else has thrown their name into the ring.
Republicans are meanwhile having to accommodate the new reality of having the oldest candidate in the race.
Later, we look at the UK broadcasting landscape with Ofcom regulator Melanie Dawes. Does Ofcom have teeth? And will it use them?
Editor: Tom Hughes
Senior Producer: Gabriel Radus
Producer: Natalie Indge
Video Production: Shane Fennelly
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