Refusing to accept defeat, Trump's lawyers and supporters continued Wednesday to file lawsuits and even call for extraordinary intervention, such as martial law, to force a new vote.

And Trump released an extraordinary 46 minute video in which he again claimed that he was robbed of victory in a "rigged" election. 

But at a White House Christmas party on Tuesday, the president suggested he might have lost this battle, but would not retire quietly as a one-term president.

"It's been an amazing four years. We are trying to do another four years. Otherwise, I'll see you in four years," he told guests.

The comment was perhaps the closest the 74 year old Trump has come to admitting his quixotic, month-long quest to reverse Biden's win has failed.

All six contested states have now certified their tallies, and the national count gives Biden nearly seven million more votes than Trump, an insurmountable four percentage-point margin.

On Tuesday Attorney General Bill Barr declared that the Justice Department had found no significant evidence of fraud in the election.

Biden meanwhile continued to prepared for taking office on Jan.20, telling The New York Times in an interview how he plans to revive the economy.

"I want to make sure we're going to fight like hell by investing in America first," Biden said.

Trump still refuses to publicly concede his defeat on Nov.3, forcing him from office after one term.

He has remained shuttered in the White House, limiting his public appearances, and apparently holding few official meetings, while issuing furious tweets about alleged election fraud.

But according to media reports he is preparing his exit, holding discussions about issuing preemptive pardons for his three adult children - Don Jr, Eric and Ivanka - for Ivanka's husband Jared Kushner, and his own personal lawyer Rudy Giuliani.  

On Wednesday he released on Twitter a formal address on the election.

"This may be the most important speech I've ever made," he began.

He recited a litany of complaints about the election, saying the Democrats used the COVID-19 crisis to force widespread use of mailed ballots, which he said were fraudulently manipulated to support Biden.

"This election was rigged, everybody knows it," he said.

"It is statistically impossible that the person, me, who led the charge, lost."

"We have so much evidence," Trump said.

Supporters continued to fight against the results. Giuliani appeared before Michigan's state legislature Wednesday to present his claims of irregularities.

In Georgia, another lawyer tied to the Trump campaign, Sidney Powell, spoke to a rally of supporters claiming their votes were not counted.

But Barr's statement, in a break with the president, Tuesday went far to undermine their claims.

"To date, we have not seen fraud on a scale that could have effected a different outcome in the election," he said. 

The campaign to delay and litigate the election results, though, was turning in discomfiting directions.

In Georgia, which still faces another vote on two hotly-contested US Senate seats in early January, officials said Trump's rhetoric was dangerous, stoking potential violence against officials.

"Someone's going to get hurt. Someone's going to get shot. Someone's going to get killed. It's not right," voting system manager Gabriel Sterling said Tuesday.

And two prominent retired three-star generals, including Trump's former national security advisor Michael Flynn, chillingly called for Trump to declare martial law and have the military supervise a new election.

Trump's immediate plans were to head to Georgia on Saturday to campaign beside the two Republican Senate candidates, key to the party retaining control of the US Senate. 

But beyond that, when he might openly accept his loss, or map out his post-presidency plans, remained unknown.

According to NBC News, Trump has discussed the possibility with his close aides of launching his 2024 campaign on Jan. 20, the day Biden is to be inaugurated as president.

In theory, nothing prevents another run. The US Constitution restricts presidents to two four-year terms, but does not require they be consecutive. 

But only one president did so: Grover Cleveland, in the late 19th century.

The real estate tycoon faces the challenge of losing the center of attention, and his grip on the Republican Party, as Washington turns to the Biden administration.

Yet he retains strong support among voters, who could continue to rally behind him and make him a continuing force in Republican politics.