US President Donald Trump has once again doubled down on his allegations of voter fraud, saying that he would “never” concede the election.

“We will never give up, we will never concede,” Trump said, speaking before a crowd of supporters outside the White House on Wednesday.

Congress is expected to formally certify the election results in President-elect Joe Biden’s favour on Wednesday, with the formality coming over two months after the 3 November election, and weeks of claims by the incumbent president that the vote was rigged against him.

January 6 is the day when two chambers of the US Congress are scheduled to hold a joint session to certify 3 November results. Pence, as president of the Senate, will thus be the one to validate Joe Biden’s victory.

Several Republicans are expected to oppose the results’ certification, but their efforts are not anticipated to make a major difference, analysts have argued.Neither is it believed that Pence’s ceremonial role in the procedure will invest him with any real power to stop Joe Biden from being confirmed by Congress as President-elect just two weeks before his inauguration on 20 January.

But Trump disagrees: “The Vice-President has the power to reject fraudulently chosen electors,” the President wrote on Twitter on Tuesday.

He later urged the vice-president “to come for us”, claiming that many states wanted to “decertify the mistake they made in certifying incorrect & even fraudulent numbers in a process NOT approved by their State Legislatures (which it must be).”According to White House advisers, cited by Reuters, Pence was not planning to block Congress’s certification of Joe Biden’s victory. According to the New York Times, he has told the President so himself but this report had been dismissed by Trump as “fake news.”

The Trump campaign has filed a number of lawsuits across the country to oppose election results that found Joe Biden to be the presidential winner in key battleground states. None of his legislative efforts have yielded him any positive result so far.