Joe Biden campaign hints that Donald Trump may have to be escorted from White House

Democrats raise possibility that President Trump will refuse to leave office in January should he lose the election

Democratic presidential nominee Joe Biden addresses the nation at the Chase Center in Wilmington, Delaware. AFP

Vice presidential nominee Kamala Harris looks on as US Democratic presidential nominee Joe Biden speaks about election results in Wilmington, Delaware. Reuters

Dogs with bibs supporting Democratic presidential nominee Joe Biden are seen across the street from where ballots are being counted in Philadelphia, Pennsylvania. Reuters

Police stand guard during a demonstration held by supporters of democrat presidential candidate Joe Biden in New York. EPA

People cheer after Democratic presidential nominee Joe Biden overtook President Donald Trump in the Pennsylvania general election vote count. Reuters

Activists celebrate after Democratic presidential nominee Joe Biden overtook President Donald Trump in the Pennsylvania general election vote count, in Philadelphia, Pennsylvania. Reuters

Journalists from all over the world wait for the result of the US Presidential elections on Black Lives Matter Plaza in front of the White House in Washington. AFP

Republican canvas observer Ed White, takes photos with his smart phone as Lehigh County workers count ballots as vote counting continues in Allentown Pennsylvania. AP Photo

Supporters of President Donald Trump demonstrate outside of the TCF Centre in Detroit, Michigan. AFP

Election officials proceed with the counting of ballots at the Allegheny County elections warehouse in Pittsburgh, Pennsylvania. AFP

House of Representatives Speaker Nancy Pelosi holds a news conference during the presidential election in Washington. Reuters

Protesters urge vote counting outside the Pennsylvania Convention Center. AFP

Supporters of President Trump, who are questioning the legitimacy of the state's vote counting, gather outside of the Pennsylvania Convention Centre in Philadelphia. EPA

A police officer stands watch near a stage set up by the campaign of Democratic presidential nominee Joe Biden in Wilmington, Delaware. Reuters

Protesters, police, members of the media and others converge outside of the Convention Centre as the counting of ballots continues in the state in Philadelphia, Pennsylvania. AFP

Protesters gather outside of the Philadelphia Convention Centre. AFP

Protesters outside of the Philadelphia Convention Centre. Joe Biden took the lead in the vote count on Friday morning from President Trump, bringing him one step closer to winning the election. AFP

A stage set up by the campaign of Joe Biden sits ready in Wilmington. Reuters

The Joe Biden campaign hinted on Friday that President Donald Trump may have to be escorted from the White House in January if he refuses to concede an election that he looks increasingly on track to lose.

“As we said on July 19, the American people will decide this election,” Mr Biden’s campaign spokesman Andrew Bates said. “And the United States government is perfectly capable of escorting trespassers out of the White House.”

The statement highlights the suspicion that Mr Trump may refuse to co-operate in a smooth transition of power and resist vacating the White House if Mr Biden wins the election.

It would mark the first time in US history that a sitting president would refuse to step down after the end of his term.

As Mr Biden inches closer to victory, CNN reported that the US Secret Service has dispatched more agents to his home in Wilmington, Delaware. The Federal Aviation Administration has also implemented a no-fly zone around Mr Biden's home.

Mr Trump has repeatedly refused to accept the validity of key swing states that continue to tabulate ballots, offering baseless conspiracy theories of mail-in voter fraud to discredit the vote counts.

Twitter has repeatedly flagged the president’s posts this week, stating that “they might be misleading about an election or other civic process”.

His campaign has launched several lawsuits throughout Pennsylvania, Georgia and Nevada, many of which have failed to advance.

Mr Biden pulled ahead in Pennsylvania and Georgia on Friday as both states continue to count ballots. A victory in either state would secure enough electoral college votes to propel Mr Biden to the presidency.