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Presumptive Democratic presidential nominee Joe Biden said Thursday during a virtual fundraiser that he thinks President Trump may try to postpone the 2020 general election because "that’s the only way he thinks he can possibly win," per a pool report.

The big picture: Trump has previously made false claims that alternatives to in-person voting, like mail-in ballots, are rigged, but Biden said he wants Congress to provide alternatives so Americans feel safe heading to the polls amid the coronavirus pandemic.

What he said: "Mark my words I think he is gonna try to kick back the election somehow, come up with some rationale why it can’t be held. Imagine threatening not to fund the post office. Now what in God’s name is that about?"

  • "Other than trying to let the word out that he’s going to do all he can to make it very hard for people to vote. That’s the only way he thinks he can possibly win," Biden added.
  • The former vice president also referenced Republicans' efforts to fight voting-by-mail in Wisconsin's primary earlier this month, saying that making sure that "no one should have to risk their lives to cast a ballot" is a top priority for November.

Worth noting: Trump would need congressional approval to change the date of Election Day, which is enshrined in law by federal statute.

The other side: "Those are the incoherent, conspiracy theory ramblings of a lost candidate who is out of touch with reality. President Trump has been clear that the election will happen on November 3rd," Tim Murtaugh, the Trump campaign's communications director, told CNN.

Go deeper: How the coronavirus is changing Joe Biden's campaign

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Rubio says he's "not concerned" about mail-in voting in Florida

Sen. Marco Rubio. Photo: Al-Drago-Pool/Getty Images

Sen. Marco Rubio (R-Fla.) said in a Trump campaign press call on Saturday that he's "not concerned" about the safety of mail-in voting in Florida.

Why it matters: President Trump has blasted mail-in voting as unsafe and subject to fraud ahead of the 2020 election. The coronavirus pandemic has increased the push for mail-in voting as Americans look to socially distance and avoid crowded polling places.

Trump renomination vote to be held in private, with no media present

President Trump at the White House on Friday. Photo: Alex Wong/Getty Images

The vote on renominating President Trump will be held in private this month with no media present because of coronavirus "restrictions and limitations" in place in North Carolina, a Republican National Convention spokesperson told AP Saturday.

The big picture: The vote is due to take place at the convention in Charlotte, North Carolina, on Aug. 24. When Trump announced on July 23 that he canceled plans to hold the convention in Jacksonville, Florida, over COVID-19 concerns, he said he'd give an acceptance speech "in a different form."

Trump says Fauci is "wrong" about coronavirus cases surge

President Trump and National Institute of Allergy and Infectious Diseases director Anthony Fauci during an April daily coronavirus task force briefing at the White House. Photo: Drew Angerer/Getty Images

President Trump called out Anthony Fauci Saturday in a comment retweeting a video of the NIAID director explaining why coronavirus cases have been surging in the U.S.

Driving the news: In the video of Friday's testimony, Fauci explained that while European countries shut 95% of their economies, the U.S. "functionally shut down only about 50%." Trump responded, "Wrong! We have more cases because we have tested far more than any other country, 60,000,000.