Ahead of this evening’s drive-in rally, Obama made his campaign debut at a roundtable with Black community leaders in North Philadelphia to talk about what’s at stake in this election and encourage voter turnout. 

"The answer for young people, when I talk to them, is not that voting makes everything perfect, it's that it makes things better,” Obama said, wearing a mask while he spoke.

"The government’s us, of, by, and for the people. It wasn’t always for all of us. But the way it’s designed, it works based on who's at the table. And if you do not vote, you are not at the table," Obama said. "If you're at the table, then you're part of the solution."

"I really want to emphasize to young people as much as possible, look, in ‘08 when I was elected, we had the highest African American turnout in history. But it was still only about 60%. When people say voting doesn't make a difference, we’ve never tried what it would look like if it was 80% voting or 90% voting," he added.

Black voters remain an overwhelmingly Democratic-leaning constituency, but a notable reduction in their support could still be a problem for Biden, according to an analysis from ABC's partners at FiveThirtyEight. Older Black voters look as if they’ll vote for Biden by margins similar to Clinton’s in 2016, while Trump’s support among young Black voters has jumped from around 10% in 2016 to 21% in UCLA Nationscape’s polling.

Former President Barack Obama has touched down in Philadelphia ahead of a drive-in rally at Citizens Bank Park at 6 p.m. to campaign for Biden in-person for the first time in the 2020 cycle.

In 2016, Obama delivered Hillary Clinton's final pitch in Philadelphia as well -- at a rally for thousands the night before Election Day on Independence Mall. Amid this year's pandemic, Obama will speak to a much smaller crowd.

The event is ticketed without public access and is expected to draw over 200 cars, which will be assembled in a semi-circle around the stage. Supporters will be able to listen to Obama speak over their car radios.

Obama is expected to emphasize down-ballot races, encourage early voting and offer an appeal to Black voters.

ABC's partners at FiveThirtyEight have launched an interactive map where users can pick the winner of each state or district to see how FiveThirtyEight's election forecast changes.

Take Florida as an example. If Biden wins Florida, his chances of winning the Electoral College shoot up to greater than 99%, which could be important on Nov. 3 because Florida generally counts its votes quickly and election offices might be able to determine who won the state on election night. But if Trump wins Florida, his Electoral College chances rise to 39% making the race practically a toss-up. 

Here's an example of what that looks like, and Nate Silver's write up on how to use the tool here.

Harris started her North Carolina day trip with a stop in the liberal city of Asheville, addressing a small crowd of about 25 spectators in socially distanced circles from a parking lot at the University of North Carolina at Asheville.

The vice-presidential candidate addressed Trump's handling of the pandemic and his administration's efforts to dismantle the Affordable Care Act. She closed her brief remarks by talking about the electoral importance of North Carolina.

“The outcome of this race will in very many ways be decided by you, North Carolina. It will be. And in that way, the choices and the decisions you are making will impact people around the country," she said. 

After her remarks concluded, Harris seemed to forget she wasn’t wearing a mask and walked toward masked spectators who had abandoned socially distant spots to speak with her. US Secret Service handed her a mask, she put it on and she briefly greeted supporters from a socially distant spot.

Trump has a rally in Gastonia this evening as the race remains tight in the battleground state.

-ABC News' Averi Harper