If there is less than a half percentage point difference between Biden's and Trump's vote totals, state law dictates that a recount must be held.
The presidential race as of midday Friday remained "too close to call" for most major news outlets and decision desks, but the window was rapidly closing for any chance for President Donald Trump-who has continued to lie and spew nonsense about election fraud as it suits him-to win reelection.
In Pennsylvania, thousands of mail ballots still need to be counted, many from Democrat-leaning counties.
The former vice president will deliver an address to the nation on Friday evening, a campaign official said.
It has always been known that Biden would benefit from a late surge of mail-in balloting that was preferred by Democrats amid the pandemic.
Some of the Trump team's lawsuits only demand better access for campaign observers to locations where ballots are being processed and counted. In it, Trump falsely claimed that votes that were cast before and during the election, but counted after Election Day, are illegal votes. He also took a narrow lead in Georgia, giving the Democratic nominee the lead in a state that hasn't voted for a Democrat for president since Bill Clinton was on the ticket in 1992. About 95% of the vote is in so the race for the Keystone State - and the presidency - continues Friday. One adviser said it was clear the race was tilting against Trump, but that Trump was not ready to admit defeat.
Trump has maintained a steady lead in North Carolina, where there hasn't been much movement, but a call has not come in part because election officials there are allowed to accept mail ballots postmarked by November 3 as long as they arrive by November 12.
"The false projection of Joe Biden as the victor is based on results in four states that are far from final", said Trump campaign general counsel Matt Morgan in a statement. The Trump campaign did succeed in Pennsylvania on one minor legal fight as a state judge ruled Trump campaign workers can get closer to the ballot counting in Philadelphia. They contended that there were irregularities at some voting stations.
A Trump supporter carries a sign while wearing a Joe Biden mask during a protest outside of the Philadelphia Convention Center
By late on Thursday, a lot of people were running low on the patience Biden kept urging all to maintain.
In an earlier press conference Democratic congresswoman Nancy Peloisi referred to Mr Biden as the "president-elect" and said he had a "strong mandate" to lead.
Fifty received a lot of heat last month after taking to social media to seemingly endorse President Trump for reelection.
The presidential victor will confront a pandemic that has killed more than 235,000 people in the United States and left millions more out of work, and a country grappling with the aftermath of months of unrest over racism and police brutality. But Biden eclipsed Trump in Wisconsin and MI, two crucial Midwestern battleground states, and was inching closer to overtaking the president in Pennsylvania and Georgia, where votes were still be counted. Both margins were expected to grow as additional ballots were tallied.
Ballots are still being counted in key states, days after Tuesday's election.
Both candidates have expressed optimism that they would emerge victorious - but Trump alleged malpractices in the exercise.
Trump, 74, has sought to portray as fraudulent the slow counting of mail-in ballots, which surged in popularity due to fears of exposure to the coronavirus through in-person voting.
Seven Forms Of The Diseases In Mild Covid19
The team also detected increased levels of antibody-producing immune cells in the blood of convalescents . In the study , they discovered seven different "forms of diseases" in mild COVID-19 patients.