Trump-Biden debate: Little new insight into policy goals

"We have made significant progress from the debacle that was left by President Trump in his last term," Biden said.

Biden then went on to summarize some of his signature policies. On the economy, he vowed he will not raise taxes on anyone making under $400,000 a year and to continue his work to reduce health care costs, child care costs and give families financial breathing room.

"We're going to continue to fight to bring down inflation and give people a break," Biden said in closing.

Dan Olszewski is a socially liberal and fiscally conservative Republican entrepreneur from Wisconsin - the kind of voter who helped deliver his home state to Joe Biden four years ago.

He supported Nikki Haley in the GOP primary and said he won't support Trump after January 6. But he reached out to ABC News unprompted tonight to vent about Biden's debate performance.

"This is an unmitigated disaster for Biden. Shockingly bad," he wrote.

He says the debate hasn't changed how he plans to vote but he doesn't think Biden has done himself any favors tonight.

"Doesn't change my perspective since inept is better than evil but not sure how it can help any undecided go towards Biden," he told ABC News.

Moderator Dana Bash asked Biden, 81, and Trump, 78, to address voter concerns about their age.

"First of all, I spent half my career being criticized for being the youngest person in politics," Biden said. "I was the second youngest person ever elected to the United States Senate. And now I'm the oldest. This guy's three years younger and a lot less competent."

Biden said voters should look at his record and what his administration's accomplished.

Trump pointed to the "cognitive test" he's taken. In 2018, he took the Montreal Cognitive Assessment, a test designed to detect early signs of memory loss and other mild cognitive impairment.

"He took none," Trump said of Biden. "I'd like to see him take one, just one, a really easy one. Like go through the first five questions, he couldn't do it."

Joe Biden pointed to a plan from some House Republicans to cut $1.5 trillion in Social Security benefits by raising the retirement age as proof that Donald Trump wants to cut the program.

Republican leaders in Congress have backed off slashing Social Security benefits, but many see the current state of the program as untenable in the long term.