Trump spoke to thousands of supporters at a rally in Chesapeake, Virginia on Friday, a day after Biden's disappointing performance sparked concerns among his allies and other Democrats who were hoping to secure and improve his chances of re-election.
Biden repeatedly stumbled, paused and could not complete sentences, prompting some people to wonder whether they could replace him ahead of November.
"The question every voter should be asking themselves today is not whether Joe Biden can survive a 90-minute debate performance, but whether America can survive four more years of crooked Joe Biden in the White House," Trump said.
Trump repeated several of the false claims he made during the debate, including about abortions late in pregnancy, and again referred to rioters who have been charged with storming the Capitol to try to overturn his 2020 loss as "hostages."
He applauded a US Supreme Court ruling that came out earlier on Friday, limiting a federal obstruction law that has been used to charge Trump and hundreds of Capitol riot defendants. And he called for their release.
"Free the J6 hostages now. They should free them now for what they've gone through," he said, adding that the ruling "was a great thing for people that have been so horribly treated."
Trump has long suggested the people charged in the riot have been unfairly prosecuted and continues to promote lies and unproven theories about voter fraud.
Virginia Governor Glenn Youngkin appeared alongside Trump, saying he was going to work to secure a Trump victory in a state Biden won in 2020. The Republican governor, who was once a favourite potential presidential candidate for anti-Trump Republicans, notably waited during this year's primary and only endorsed Trump in March.
"This is about strength versus weakness," Youngkin told Trump supporters. "We have seen the weak America that Joe Biden has created, and we all lived through the strong America that Donald Trump built."
Trump said he did not think Biden could drop out of the race, mentioning the demands from some Democrats and opinion writers calling for Biden to step aside. He then criticised other high-profile Democrats such as California Governor Gavin Newsom, Vice President Kamala Harris and former first lady Michelle Obama.
Trump said he would be very happy going against Harris, who is Biden's running mate.
2°C