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

For the first time in its nearly 250-year history, the U.S. will have a woman vice president. The moment was not lost on Kamala Harris as she spoke Saturday night, taking the stage to "Work That" by Mary J. Blige, hours after ABC declared Joe Biden the apparent 46th president.

"What a testament it is to Joe's character that he had the audacity to break one of the most substantial barriers that exists in our country and select a woman as his vice president," she said.

Harris cited her victory on the 100th anniversary of the passing of the 19th Amendment, giving some women the right to vote.

Biden had promised to choose a woman as his vice president candidate in the run-up to Harris' selection. After interviewing a number of candidates -- including former Obama national security adviser Susan Rice, Florida Rep. Val Demings and Michigan Gov. Gretchen Whitmer -- he chose Harris on Aug. 11.

"But while I may be the first woman in this office, I will not be the last," Harris said. "Because every little girl watching tonight sees that this is a country of possibilities and to the children of our country regardless of your gender, our country has sent you a clear message: Dream with ambition, lead with conviction and see yourselves in a way that others may not simply because they've never seen it before."

Harris was only the third major ticket vice presidential candidate following Geraldine Ferraro in 1984 and Sarah Palin in 2008.

Kamala Harris took the stage in Wilmington, Delaware, with a message from the late lion of the Democratic Party.

"Congressman John Lewis before his passing wrote 'Democracy is not a state, it is an act.' And what he meant was that America's democracy is not guaranteed," she said. "It is only as strong as our willingness to fight for it."

Harris did not mention current President Donald Trump, but said the democracy itself was on the ballot, as huge signs reading "The People Have Chosen Empathy."

"And when our very democracy was on the ballot in this election with the very soul of America at stake and the world watching, you ushered in a new day for America," she continued.

Harris took to the stage at 8:30 p.m. and thanked poll workers for counting votes, as well as organizers in the field. She also thanked her husband, Doug, and Joe Biden for choosing her as his running mate.

She left her biggest thanks for her mother, who came from India and followed the American dream.

Georgia Secretary of State Brad Raffensperger posted on Facebook that Fulton County, the state's largest, "discovered an issue involving reporting from their work on Friday."

The updated vote from Fulton County on Friday night took Biden from an approximate 4,000-vote lead to an approximate 7,000-vote lead. Roughly 5,000 votes were uploaded from the county. The statement from Raffensperger did not specify what the issue was. 

"Officials are at State Farm Arena to rescan their work from Friday. The Secretary of State has a monitor onsite, has sent additional investigators, and dispatched the Deputy Secretary of State as well to oversee the process to make sure to thoroughly secure the vote and protect all legal votes. Observers from both political parties are there as well," Raffensperger said in the statement. 

ABC News obtained a statement from Fulton County that said after Director of Elections & Registration Rick Barron asked staff to review Friday night's reporting to ensure all provisional ballots were reflected in the reported results, Barron learned that "some ballots were not captured" and "a smaller number (sic) were not scanned."

"Out of an abundance of caution, all provisional, military and UOCAVA allots scanned on Friday, November 6 will be rescanned tonight. The upload made last night will be pulled and replaced with tonight’s rescanned file," the statement continued.- Quinn Scanlan

As Joe Biden takes the stage in Delaware Saturday night to deliver a victory speech, the Trump campaign is grappling with the reality of a loss.

"It's a horrible feeling," one Trump campaign aide told ABC News after the major networks called the race for Biden. Some staffers said they'd come to grips with losing in recent days, others said it didn't feel real until Fox News made the final call on Saturday, according to sources.

Though the Trump team has filed lawsuits in several states, sources familiar with the actions stress to ABC News that there has been internal bickering over the suits with some members of the president's legal team feeling they are "pointless" and "meritless."