US elections: Could Kamala Harris be the first female president?

Already a trailblazer, Kamala Harris could be on the way to becoming the first woman to serve as president in the United States.

Biden announced Sunday that he was stepping aside after a disastrous debate performance catalyzed fears that the 81-year-old was too frail for a second term.

Moments after the announcement, he endorsed his vice-president Harris to replace him in the race.

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