U.S. President Donald Trump on Thursday tweeted unproven allegations of vote-counting fraud, while surrogates of his campaign fanned out in linchpin states to file legal actions challenging the integrity of the process.

The president trails former Vice President Joe Biden in the popular vote nationwide as well as the breakdown of Electoral College votes, which will actually determine the victor.

In a series of tweets as his path to victory narrowed, the president, who remained inside the White House during the day, declared without foundation that any vote that came in after the day of the November 3 election “WILL NOT BE COUNTED.”

That declaration was subsequently flagged by Twitter with a note: “Some or all of the content shared in this Tweet is disputed and might be misleading about an election or other civic process.”

On his @realDonaldTrump account, the president also stated that all of the “recent Biden claimed states will be challenged by us” because of alleged voter fraud and state election fraud. Trump asserted in the tweet that there was “plenty of proof” of this “in the Media.”

He had earlier demanded on Twitter an end to the vote count, which is controlled by the individual states not the federal government. Several states have laws permitting late-arriving ballots to be counted if they are postmarked by Election Day.

Democratic presidential candidate former Vice President Joe Biden speaks Thursday, Nov. 5, 2020, in Wilmington, Del. Democratic…
Democratic presidential candidate former Vice President Joe Biden speaks on Nov. 5, 2020, in Wilmington, Del. Democratic vice presidential candidate Sen. Kamala Harris, D-Calif., stands at left.

“Each ballot must be counted,” Biden said in brief remarks on camera in Wilmington, Delaware, Thursday afternoon. “And that's what we're going to see going through now. And that's how it should be. Democracy is sometimes messy. It sometimes requires a little patience, as well.”

With running mate Sen. Kamala Harris also on the podium, Biden added, “We have no doubt that when the count is finished, Senator Harris and I will be declared the winners. So, I ask everyone to stay calm. All the people to stay calm.”

Since Election Day, Trump’s campaign has filed or said it is filing lawsuits in a number of states, making various assertions about the voting or counting process. As of yet, no judge has made a preliminary ruling favorable to the incumbent in any of these actions. Several were quickly dismissed in Georgia, Michigan and Minnesota.

“The Trump campaign is alleging fraud without any basis,” said Robert Bauer, legal counsel and adviser to the Biden campaign. “This strategy of disrupting the vote is doomed to fail.”

The Trump campaign also issued a statement Thursday in all capital letters from the president:

"IF YOU COUNT THE LEGAL VOTES, I EASILY WIN THE ELECTION. IF YOU COUNT THE ILLEGAL AND LATE VOTES, THEY CAN STEAL THE ELECTION FROM US!"

Observers watch as county election workers scan mail-in ballots at a tabulating area at the Clark County Election Department,…
Observers watch as county election workers scan mail-in ballots at a tabulating area at the Clark County Election Department, Nov. 5, 2020, in Las Vegas.

In Clark County, Nevada, a Democratic Party-leaning area and the most populated county in the state that could put Biden over the top in the nationwide electoral vote count, the Trump campaign said it was filing a court case alleging 10,000 nonresidents were allowed to vote and that Republican monitors were unable to inspect other ballots that were invalidated.

“It is unacceptable in this country to have illegal votes counted. And that is what's happening in the state of Nevada,” said Richard Grenell, a former acting director of national intelligence.

Grenell, also a former Trump-appointed ambassador to Germany and special envoy for peace negotiations in Serbia and Kosovo, did not provide any evidence of the charges and declined to respond to reporters’ questions.

Congressional Republicans have largely remained silent. A few have spoken out about respecting the process. One called for Trump to end his assertions that the Democrats are trying to steal the election.

Rep. Adam Kinzinger, R-Ill., speaks to the media, Wednesday, March 6, 2019, at the White House in Washington. (AP Photo…
Rep. Adam Kinzinger, R-Ill., speaks to the media, March 6, 2019, at the White House in Washington.

“Stop. Full stop,” Congressman Adam Kinzinger of Illinois tweeted to Trump on Wednesday. “The votes will be counted and you will either win or lose. And America will accept that. Patience is a virtue.”

The president’s reelection campaign has also signaled it will request a recount in the state of Wisconsin, where Biden has been declared the victor by more than 20,000 votes.

Recount requests by the Trump campaign are also possible in other states.

Supporters of the president gathered outside voting tabulation centers in Arizona, Nevada and Pennsylvania to protest ongoing ballot counting. In Philadelphia, other demonstrators, organized by various progressive groups, marched to call for every vote to be counted.

Trump allies have used other social media platforms to organize nationwide protests under a “Stop the Steal” banner.

Supports of President Donald Trump holds signs during a demonstration outside the State Farm Arena where Fulton County has a…
Supports of President Donald Trump holds signs during a demonstration outside the State Farm Arena where Fulton County has a voting counting operation, Nov. 5, 2020, in Atlanta.

A Facebook group under that name accumulated 360,000 members before it was removed Thursday because it violated the social media platform’s rule when conversation drifted into talk of armed conflict and overthrow of the government.

“The group was organized around the delegitimization of the election process, and we saw worrying calls for violence from some members of the group,” said Andy Stone, a Facebook spokesman.