Donald Trump on Thursday took another step towards conceding the US presidential election on Thursday when he said he would leave the White House if the electoral college certified Joe Biden as the winner of November's vote.
But the US President repeated unsubstantiated claims of electoral fraud and refused to say if he would attend Mr Biden's inauguration on January 20.
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US vice president-elect Kamala Harris and president-elect Joe Biden arrive for victory address after being declared the winner in the 2020 presidential election, in Wilmington, Delaware. EPA -
US president-elect Joe Biden and Jill Biden with vice president-elect Kamala Harris are joined by family members after Mr Biden delivered his victory address following the announcement of the winner in the 2020 presidential election, in Wilmington, Delaware. EPA -
People watch fireworks after media announced that Democratic US presidential candidate Joe Biden has won the 2020 election, in Wilmington, Delaware. Reuters -
US president-elect Joe Biden gestures in celebration after delivering remarks in Wilmington, Delaware. AFP -
Democratic presidential nominee Joe Biden and his wife Jill, and Democratic vice presidential nominee Kamala Harris and her husband Doug, react to the confetti at their rally in Wilmington, Delaware. Reuters -
Vice president-elect Kamala Harris arrives to deliver remarks before introducing the US president-elect Joe Biden in Wilmington, Delaware. AFP -
People gather to watch the speeches in Times Square in New York City. Reuters -
Gabriella Ziccarelli, 32, from Arizona, holds a US flag as she watches a speech by vice president-elect Kamala Harris, in Times Square in New York City. Reuters -
Vice president-elect Kamala Harris speaks in Wilmington, Delaware, November 7, 2020. Reuters -
US president-elect Joe Biden and vice president-elect Kamala Harris gesture during their post-election rally in Wilmington, Delaware. Reuters -
A person wearing a protective mask holds a 'Biden Harris' campaign sign outside Trump National Golf Club in Sterling, Virginia. Bloomberg -
The presidential motorcade, with US President Donald Trump, travels through Reston, Virginia, after President Trump played golf at his International golf club. AFP -
President Donald Trump returns to the White House from playing golf in Washington, after Joe Biden was declared the winner of the 2020 presidential election. AFP -
President Donald Trump plays golf at Trump National Golf Club in Sterling, Virginia. AFP -
A woman reacts as she watches speeches by Joe Biden and Kamala Harris, in Times Square in New York City. Reuters -
People watch the speeches by Joe Biden and Kamala Harris, at Times Square in New York City. Reuters -
Confetti falls after US president-elect Joe Biden and vice president-elect Kamala Harris delivered speeches in Wilmington, Delaware. AFP -
US president-elect Joe Biden with his wife Jill Biden, salute the crowd on stage after delivering a speech in Wilmington, Delaware. AFP -
US president-elect Joe Biden, wife Jill Biden, vice president-elect Kamala Harris and husband Douglas Emhoff hold hands while wearing protective masks during a post-election event in Wilmington, Delaware. Bloomberg -
Vice president-elect Kamala Harris and president-elect Joe Biden stand on stage with family members in Wilmington, Delaware. AP Photo -
A boy carries a sign with vice president-elect Kamala Harris at Black Lives Matter Plaza in Washington. Reuters -
People watch a speech by Democratic vice presidential nominee Kamala Harris, at Times Square in New York City. Reuters -
A woman takes selfie photo posing with an extra edition of a newspaper reporting that Democrat Joe Biden is projected to win the 2020 US presidential election, in Tokyo, Japan. Reuters
"It's going to be a very hard thing to concede because we know there was massive fraud," Mr Trump said at the White House on Thanksgiving.
Asked if he would give up power if the electoral college, which is to vote on December 14, certified Mr Biden's victory, he said: "Certainly I will and you know that."
Mr Trump angrily denounced officials in Georgia and Pennsylvania, two key swing states that helped to give Mr Biden the win, as "enemies of the state" and claimed they were culprits in vote fraud.
State officials and international observers have repeatedly said no evidence of fraud exists and his campaign has repeatedly failed in court.
