Election 2020 updates: Biden warns of 'dark winter,' pushes masks in pandemic plan

Donald Trump Jr. and a few Trump campaign surrogates held a press conference in Atlanta Thursday night.

Georgia State Rep. Vernon Jones kicked things off by falsely claiming illegal ballots were being counted and that Trump supporters should be ready for a fight.

"We need to know now. ... How the hell you can send a man to the moon, but you can't get results in 24 hours? Something’s wrong with that," he said.

Trump Jr. took the stage next and said, "I think the number one thing that Donald Trump can do in this election is fight each and every one of these battles to the death, so that we get full transparency in the process and everyone on the Democrat side should welcome this unless they're actually cheating. Because if they're winning these things fair and square, then everyone would love to know that because me as an American, I'd like to know that because I've lost all faith in the process."

Rep. Doug Collins and Georgia Republican National Committeewoman Ginger Howard also attended.

Throughout the event there were several rallying cries of the Republican members in the audience who loudly chanted "stop the steal" and "Georgia is red."

-ABC News' Justin Gomez and Terrance Smith

The RNC and Trump campaign filed a motion Thursday to intervene in an Arizona lawsuit that raises issues with the use of permanent markers on ballots in Maricopa County and other regions of the state.

The case is being brought by a woman in Arizona who claims that a ballot box failed to properly read her vote after she was provided a Sharpie to fill out her ballot at her polling place. 

The plaintiffs are requesting that ballots that could not be read by the voting machines due to the use of Sharpies be allowed to be cured, and that individuals who experienced errors with voting machines due to use of a Sharpie be allowed to observe the ongoing adjudication process. 

The plaintiffs said they'd like discovery to occur in the case and suggested a hearing a week from Thursday. RNC interveners suggested an even longer timeline. 

Tom Liddy, an attorney for Maricopa County, argued at a conference Thursday that the case ought to be dismissed -- and that it should be done quickly in order to prevent any potential delays in tabulation. 

"The voters have a right to know that the allegations flying around the internet about sharpies being dropped from black helicopters to trick people out of votes are fake," Liddy said. "They are not real but they are scaring people."

Liddy also noted that those interested in watching the ballot adjudication process can do so online right now. 

The judge said it was not immediately clear to her how allowing individuals to watch ballot tabulation and adjudication was an appropriate remedy for those concerned that their ballots were not counted correctly.

The judge ordered that parties in the case decide on a path forward and present it to her by 11:30 a.m. MT Friday. 

The Arizona secretary of state and Maricopa County elections officials have asserted that Sharpies are a safe -- and even preferred -- method for casting in-person ballots in the state. 

-ABC News' Allison Pecorin

Several moderate Republicans quickly responded to Trump's remarks Thursday night.

Illinois Republican Rep. Adam Kinzinger called for the president to stop spreading misinformation, saying "this is getting insane."

Republican Maryland Gov. Larry Hogan, who has said he did not vote for Trump, tweeted that there was "no defense for the President's comments tonight undermining our Democratic process."

Utah Republican Sen. Mitt Romney, the only Senate Republican who voted to convict Trump during his impeachment trial, did not mention the president by name but said, "have faith in our Democracy, in our Constitution, and in the American people."  

Trump campaign surrogates Pam Bondi, former Florida Attorney General, and Corey Lewandowski appeared Thursday evening in the middle of dueling protests outside the Philadelphia Convention Center to say they had filed a lawsuit in federal court meant to immediately stop the Philadelphia vote count. 

The court, "in light of the Parties' agreement," denied without prejudice, the Trump campaign's request.

The federal lawsuit alleged that the Philadelphia County Board of Elections is "intentionally refusing to allow any representatives and poll watchers for President Trump and the Republican Party" from properly observing the vote, disobeying an earlier order. 

"They have refused to let us have meaningful -- a meaningful view of the vote count," Bondi said Thursday evening. "They are not letting us look at anything at all, nothing. So we have filed in federal court. We have just filed a motion in federal court for immediate injunctive relief to shut down the voting process until -- until we can get a resolution where we can look at these ballots."

-ABC News' Matthew Mosk and Alex Hosenball