JOE Biden and his running mate Kamala Harris have been branded a "socialist Trojan Horse" - but could she become President halfway through his term?
Harris, 56, a left-leaning California Senator today made history by becoming the first female Vice President - and could even become leader of the Free World if Biden were ever to quit.
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Biden dramatically sealed election victory today after finally taking Pennsylvania to end Donald Trump's four years in the White House.
Harris is also the first black woman and Asian-American on a major presidential ticket.
She has described herself as a "progressive prosecutor" and "top cop" during her previous role as the Attorney General for the State of California.
Trump and his campaign have repeatedly tried to paint Harris as being "radical left".
While on the campaign trail in September, Trump claimed she is "further left than crazy Bernie".
Trump's campaign has tried to paint Biden and Harris as a "Trojan horse" for the "radical agenda".
Last month, Harris was asked on CBS about Trump's comments and if she would push those policies "from the left wing of the Democratic party".
Harris responded: "I am not going to be confined to Donald Trump’s definition of who I or anybody else is and I think Americans learned that would be a mistake."
In the same interview, she burst out laughing when asked if she would advocate for a “socialist or progressive perspective” if elected.
Biden will become the oldest newly-elected US President when sworn in after securing key swing states in the knife-edge .
He will turn 78 on November 20 and throughout the campaign his repeated gaffes have seen some like Trump call his health into question.
In the days before election day, Biden appeared to confuse his granddaughters by stumbling over his words when talking about his late son Beau.
RUNNING MATE
Before Biden announced a running mate, most voters thought he could pick someone who would likely take over as President within the next four years if he gets elected.
Some 59 per cent of likely US voters polled in August by said they believe Biden's running mate would become President.
It didn't ask why they believed this would happen but in a separate poll from , 38 per cent of likely US voters thought Biden had dementia.
If Biden were to resign during his term, then Harris would automatically ascend to Commander-in-Chief.
However, he could removed from office under to the US Constitution.
A sitting President can be removed from office if the Vice President and a majority of the cabinet determine that he or she is “unable to discharge the powers and duties” of the office.
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Should that happen, the Vice President would immediately assume the office of President.
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Harris was a presidential candidate herself last year, the former district attorney of San Francisco and is a current Senator for .
She has been married to her husband Douglas Emhoff, a lawyer, for the past six years and has two step-children, Ella and Cole.