Biden's campaign announced his three guests to the debate: Kristin Urquiza, Gurneé Green and James Evanoff Jr.

The public first met Urquiza when she shared her story at the Democratic National Convention. She lost her father to COVID-19, and declared his "only pre-existing condition was trusting Donald Trump -- and for that he paid with his life." Urquiza is an environmental advocate at Mighty Earth and co-founded the awareness campaign "Marked by COVID."

Green is a small business owner from Cleveland Heights who was also highlighted during the Democratic National Convention. He owns the Cleveland Heights fashion boutique Chemistry 11. In addition to being a small business owner, Green is a certified health care information technologies analyst and a mother of two.

Evanoff is a service technician in Cleveland. He has eight years of seniority with United Steel Workers and works at ArcelorMittal, which was recently acquired by Cleveland Cliffs.

ABC News' Molly Nagle and Mary Bruce

Trump's first presidential debate with Hillary Clinton in 2016 set the record as the most-watched debate in television history, with 84 million viewers, surpassing the previous record of 80.6 million viewers set between Jimmy Carter and Ronald Reagan in 1980, according to Nielsen.

Trump's second debate with Clinton back in 2016 ranks as the ninth most-watched presidential debate with 66.5 million viewers.

MORE: Trump blames media after DNC tops RNC in TV ratings

On Sunday, a New York Times expose on President Trump’s tax returns revealed decades of tax avoidance and millions of dollars in business losses over the past two decades.

The picture painted by Trump’s returns is sharply at odds with the shrewd, deal-making image the president has tried to fashion as a real estate mogul and TV star on a show built around his business prowess, “The Apprentice.”

Now, five weeks from Election Day, the question is will these new revelations affect the presidential race?

Read the analysis from FiveThirtyEight's Geoffrey Skelley here.

When President Trump rang in 2020, the economy was one of his biggest selling points for reelection. He had inherited a strong economy from the Obama administration, and it continued to grow stronger during his first term. Unemployment was hovering at a 50-year-low, GDP growth was exceeding expectations and Wall Street was riding the longest bull market in its history.

But by spring, all of that came crashing down. While the economy has begun to shakily recoup some of its losses, a full and speedy recovery is anything but assured, making it a top concern for many Americans. According to a poll from the Kaiser Family Foundation released earlier this month, registered voters ranked the economy as the most important issue in deciding their pick for president, putting it ahead of the ongoing pandemic.

Trump is now trying to convince the country that since he oversaw a robust economy before the outbreak, he’s the best candidate to restore it. His opponent, Joe Biden, argues that Trump’s mishandling of the coronavirus compounded its impact on an economy that was inequitable to begin with and that it should be reimagined rather than rebuilt.

Click here to see how the candidates’ economic plans compare.

-ABC News' Shannon K. Crawford

TRUMP'S CLAIM: "It's China's fault, it should have never happened. They stopped it from going in. But it was China's fault. By my doing it early -- in fact, Dr. Fauci said, 'President Trump saved thousands of lives.' Many of your Democrat governors said, 'President Trump did a phenomenal job.'"

FACT CHECK: Trump is overstating his early actions in containing the virus by suggesting his travel restrictions from China were critical.

While Dr. Anthony Fauci has confirmed that those restrictions were important, Trump is omitting a major miscalculation he made early on in the pandemic -- not restricting travel from Europe.

"The president's decision to essentially have a major blocking of travel from China, that already had an effect of not seeding the way, in Europe," Fauci told ABC News Chief Anchor George Stephanopoulos on "This Week" in March. "What we're doing now with the other travel restrictions -- so you block infections from coming in," Fauci continued, adding that containment and mitigation efforts were implemented to keep us away from that worst-case scenario."

Up to 75% of the coronavirus specimens circulating in the New York City area in early March were genetically similar to strains seen in Europe and other areas of North America, according to a Centers for Disease Control and Prevention study published in July.

Although Fauci has said that the president's travel restrictions did save lives, he has also stated on numerous occasions that if mitigation efforts such as social distancing and mask wearing were implemented earlier, then many lives could have been saved.

"I mean, obviously, you could logically say that if you had a process that was ongoing and you started mitigation earlier, you could have saved lives. ... If we had right from the very beginning shut everything down, it may have been a little bit different," Fauci said during an interview on CNN in April.

-ABC News' Arielle Mitropoulos