The Third Circuit Court of Appeals has rejected the Trump campaign’s appeal of a scathing U.S. District Court ruling out of Pennsylvania in which the campaign’s request to set aside potentially thousands of legally cast ballots was refused.

The opinion was just as blistering as the one that preceded it.

“Free, fair elections are the lifeblood of our democracy. Charges of unfairness are serious. But calling an election unfair does not make it so. Charges require specific allegations and then proof. We have neither here,” said the opinion from a three-judge panel authored by Judge Stephanos Bibas, a Trump appointee.

-ABC News' Matthew Mosk

Despite telling reporters Thursday that he would leave the White House if Biden is inaugurated, while still not conceding, Trump continued on Friday to baselessly cast doubt on the president-elect's record-breaking popular vote lead.

In a tweet Friday morning, Trump wrote, "Biden can only enter the White House as President if he can prove that his ridiculous "80,000,000 votes" were not fraudulently or illegally obtained" and went on to allege -- without citing any proof -- that Biden "got a big unsolvable problem!"

As reported previously by ABC News, the Trump campaign and its allies have lost at least 30 cases brought in the effort to overturn the results of the election, according to an ABC News count.

Biden won the Electoral College by the same margin as Trump did in 2016 and leads in the popular vote by over 80 million votes.

-ABC News’ Alisa Wiersema

Several leading candidates for the roles in president-elect Joe Biden’s administration have come under scrutiny for their work in corporate America or lobbying history.

Michele Flournoy, a leading candidate for the head of the Department of Defense after serving in senior posts at the Pentagon during the Clinton and Obama administrations, has faced criticism from progressive and left-leaning activists for her ties to defense contractors and a strategic advisory firm that has faced questions about its clients.

Several other Cabinet selections and initial White House hires for the Biden administration, along with members of his transition efforts, are under the microscope as well, showing an early struggle between the activist and established wings of the Democratic Party, which collaborated to elect Biden and deny President Donald Trump a second term.

-ABC News’ Benjamin Siegel and Soo Rin Kim

Vice President Mike Pence shared a message of gratitude on Thanksgiving to first responders, military members and health care workers.

“On this Thanksgiving Day, we’re thankful for our Family, Friends & the Doctors, Nurses, First Responders & Men & Women of our Armed Forces that we’ve met along the way. God Bless our Healthcare Workers & our Military, especially those deployed overseas Defending Our Freedom!”

In a message earlier Thursday, the Pence family wished everyone a Happy Thanksgiving on behalf of the vice president and second lady Karen Pence.