Election 2020 updates: Trump claims he saved Big Ten football, slams Obama

A very fired up Joe Biden gave the hometown pitch during his remarks in Luzerne County, Pennsylvania, doubling down on the Park Avenue versus Scranton messaging for a good chunk of his remarks, which focused on kitchen table issues and the economy.

Turning to COVID-19, Biden, shouting into the microphone, slammed Trump for not properly warning the country about virus, and mocked Trump for being a "stable genius."

"You know what's really sad about all this? The president knew back at the end of January how deadly the virus was and he hid it from the country. But here's what he did, you know, remember when he went on -- he decided he was going to convince Bob Woodward what a smart guy he was. So he went on -- yeah, smart guy. Stable genius," Biden said, picking up on the crowd's reaction to calling Trump "smart."

Before Biden spoke, Jon Bon Jovi performed three songs for the crowd: "Who Says You Can’t Go Home," "Livin' On A Prayer" and a new COVID-19-themed song, “Do What You Can." 

Biden praised Jon Bon Jovi as "a national treasure," and thanked him for performing. 

Biden entered and exited the stage to Bon Jovi’s "Limitless."

-ABC News' Molly Nagle

As President Donald Trump arrived in Ohio for his second campaign rally of the day, he told reporters "nothing worries me" about the election.

"I think we’re doing just very well, you look at the numbers in Florida. We're way ahead where we were four years ago, right? Way ahead where we were four years ago and I think I can say that everywhere else," the president said.

Trump said he voted "straight Republican" when he went to vote early in Florida Saturday morning.

-ABC News' Elizabeth Thomas

Former President Barack Obama campaigned in Miami Saturday at a drive-in rally for his former vice president, Joe Biden, and slammed President Donald Trump for "treating the presidency like a reality show.

"He hasn’t shown any interest in doing the work," Obama said.

"We literally left this White House a pandemic playbook that showed them how to respond before a virus reached our shores," he said.

"The rest of us have to live with the consequences of what he's done. At least 220,000 Americans are dead. More than 100,000 small businesses have closed," Obama said. "You think he's hard at work coming up with a plan to get us out of this mess?"

Obama also slammed Trump for bashing the press. "If you're spending all your time complaining about how mean reporters are to you, you're not going to stand up to Putin," Obama said.

"With Joe and Kamala [Harris] at the helm, you won't have to think about them every single day," Obama said. "It won't be so exhausting. Just having a normal president."

Obama also called out Republicans for trying to repeal the Affordable Care Act without presenting a replacement.

"When they're asked about it, they say 'Well, look, we're going to have a great replacement. It's coming. It's going to be here in two weeks,'" Obama said. "It's been 10 years now, and every two weeks they say they've got a replacement."

In response to former Vice President Joe Biden, who warned of a "dark winter" due to the pandemic, President Donald Trump said Saturday, "we gotta have spirit."

The U.S. on Friday saw its highest daily number of COVID-19 cases since the pandemic began. "If we tested half cases would be half," the president argued, despite the fact that cases would still exist even if undetected.

Trump expressed his exhaustion with hearing about COVID-19 cases, repeating the word "COVID" 10 times in a matter of seconds, mocking the coverage of the pandemic.

"That's all I hear about now. That’s all I hear ... COVID COVID COVID COVID COVID COVID, a plane goes down, 500 people that they don't talk about it. COVID COVID COVID COVID, by the way, on November 4 you won't hear about it anymore," he said to his roughly few thousand supporters gathered in the sun not socially distanced. Not many wore masks even though some people had masks dangling from their necks.

The presidential race is in a dead-heat contest in North Carolina, where Biden has 49% support among likely voters in a new ABC News/Washington Post poll in the state, while Trump has 48% support.

Trump narrowly won North Carolina in 2016.

-ABC News' Will Steakin