There is a dizziness to American politics right now - Vice President Kamal Harris raised 49 million dollars in the first twelve hours following Joe Biden's announcement that he would exit the race.
She spent ten hours hitting the phones to garner Democratic support and is insisting she must 'earn' the votes of the delegates. But is the race already sewn up? Or might other candidates throw their names in the mix? And how well do we really know the figure who could be America's first female president?
We talk to Ambassador Tony Gardner - a man right at the centre of the Democrats presidential campaigns, and to our leading historian Simon Schama - about the legacy Biden will leave and what this moment means for America.
Editor: Tom Hughes
Producer: Natalie Indge
Video Production: Shane Fennelly
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