If Donald Trump refused to concede, it would break a 124 years tradition of American history and undermine the election results and increase political tensions.
"It will be truly harmful," said William Howell, chair of the political science department at the University of Chicago.
"Concession speeches are a kind of affirmation about the legitimacy of elections," he said. They're about losing candidates recognizing the outcome and calling on their followers to do the same, "which is essential for the health of our democracy," he said.
Conceding to the president elect is expected. Refusing would not follow the normal steps in the peaceful transition of power. Donald Trump continues to make unsubstantiated claims of voter fraud and threaten new lawsuits he says will expose fraud. However, that is not true.
Trump's failure to concede quickly is a surprise to some. Republican congressional leaders have been quiet so far. On Sunday, Republican House leader Rep. Kevin McCarthy said nation had to wait for the process to play itself out. But former President George W. Bush called Biden "president-elect".
The Trump team continues to find a legal challenge; Top Republicans remain undecided on whether to congratulate Joseph R. Biden Jr. Democrats are mostly planning for a Biden administration.
Biden made known his official transition website and prepares release executive actions on his first day in the White House.
As top Republicans remained divided Sunday over congratulating President-elect Joseph R. Biden Jr. and declaring the election over, President Trump's closest advisers continue to brief him on possible "legal remedies," according to a White House official.
Democrats like SC Congressman Jim Clyburn, believe Trump should concede they are also calling on Trump to make stronger statements about the election results.
"I think Trump should concede, but I also believe the Republican Party has a responsibility here," Clyburn said in a Sunday morning interview on CNN. "This country is bigger than any one person, this democracy is teetering at...an inflection. We are in a very dire set of consequences here and we better get a hold of ourselves and this country and stop catering to the whims of one person," Clyburn added.