As Joe Biden supporters celebrate on the streets of major US cities after the Democrat's presidential win, Donald Trump says the election is "far from over".
The outgoing US President was golfing in Virginia when major TV networks called the win for rival Biden after he won the battleground state of Pennsylvania, taking him past 270 electoral votes early Sunday morning (local time).
Hundreds have gathered outside Trump Tower in New York, chanting, shouting, and cheering after news of Biden's victory.
Others are celebrating by dancing and sounding car horns outside city hall in Philadelphia - and tweeting 'You're Fired' to Trump, former star of The Apprentice.
But it won't be until inauguration day on January 20 when Biden can begin his term as President, so what's next?
In a 'normal' election, it is routine for the losing candidate to call the winner and concede, so a peaceful transfer of power can follow suit.
However, Trump has pushed unsupported claims of widespread election fraud, saying the Democrats are "trying to steal the election".
After Biden was announced winner, Trump released a statement saying the election was "far from over".
Trump has followed through with the claims, launching legal challenges in the battleground states of Georgia, Michigan, Nevada, and Pennsylvania.
Georgia, a historically Republican state, announced a recount of votes on Saturday after a razor-thin margin between the two candidates. Candidates can request a recount if the margin is within 0.5 percent.
Republicans have spoken of requesting a recount in Wisconsin as well.
Trump's legal challenges are a bid to invalidate enough votes for Biden and turn the result around. Even so, an adviser to former US President Bill Clinton says the scheme would have a "very small probability" of success.
"But this is a man who hates losing and will do anything that it takes to win," William Galston told ABC.
Trump has failed to make headway in his legal proceedings due to a lack of evidence for his claims of fraud.
On December 14, state electors will meet to report their electoral results.
If no settlement is made by then, the states can't report the votes and they will not be added to the official electoral tally. If neither candidate officially reaches 270 votes, the House of Representatives will vote on it.
It's unlikely to get that far, but if it does, each state will get one vote and Trump will have the numbers to win.
However Trump's plan may not be to win the legal battles, but instead, generate mass protests in the hope of disrupting and delaying the changeover process.
Trump's former chief of staff Mick Mulvaney says he would "recommend" a peaceful transfer of power if Biden is declared the winner.
"I recommend that he accept a peaceful transition of power, which I think he would do absolutely anyway," Mulvaney told CNBC.