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Not only will the 56-year-old be the first woman to hold vice presidency but she is also the first woman of colour to take on the role.
Joe Biden won presidency today (7 November) after winning the state of Pennsylvania - taking his electoral college vote to 284 and passing the 270 needed to win.
Following the win, Kamala Harries shared a video of her on the phone to Biden where she says: "We did it, we did it Joe. You're going to be the next President of the United States."
She went on to tweet: "This election is about so much more than @JoeBiden or me. It's about the soul of America and our willingness to fight for it. We have a lot of work ahead of us. Let's get started."
After it was announced that Biden is to become the 46th US President, he conveyed a similar message to Harris writing: "America, I'm honoured that you have chosen me to lead our great country.
""The work ahead of us will be hard, but I promise you this: I will be a President for all Americans - whether you voted for me or not. I will keep the faith that you have placed in me."
Biden was declared the winner as the vote counting continued into its fifth day - after he was given a lead of more than 30,000 votes in Pennsylvania around 4pm UK time.
As the counting went on (and on and on) Trump made unfounded allegations of 'fraud' and claimed there was 'shenanigans' involving illegal votes.
Meanwhile, Biden, who had already been tipped to win, urged his supporters to show patience and allow the process to unfold.
He said: "Democracy is sometimes messy. it sometimes requires a little patience as well. But that patience has been rewarded for almost 240 years with a system of governance which is the envy of the world."
Adding: "Everybody stay calm, the process is working."
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