Former Vice President Joe Biden boarded a new campaign plane in Wilmington, Delaware, at 3:18pm as he gets ready to head to Cleveland, Ohio, for the debate tonight.

-ABC News' Molly Nagle

Overwhelming support in Philadelphia and its suburbs lift former Vice President Joe Biden to a clear lead in crucial Pennsylvania, with backing from college-educated white people and women -- notably white, moderate and suburban women -- central to his advantage in a new ABC News/Washington Post poll.

President Donald Trump, for his part, is suffering attrition among his 2016 supporters; 8% of them now back Biden instead. While a small slice of the electorate, it’s a potentially important factor in a state Trump won by 44,292 votes out of nearly 6.2 million cast four years ago.

Likely voters support Biden over Trump by 54 to 45%, almost exactly matching a national ABC/Post poll released Sunday. The result includes more than a 2 to 1 Biden lead in the populous Philadelphia suburbs, home to nearly a quarter of likely voters, and close results in northeastern and western Pennsylvania, leaving only the conservative center of the state clearly to Trump.

See more data on this new poll here.

-Gary Langer of Langer Research Associates, conducted the poll.

-ABC News' Isabella Meneses contributed to this report.

The Biden campaign released Joe Biden and Kamala Harris’ 2019 tax returns, a clear effort to draw a sharp contrast with the revelations about Trump’s tax returns reported by the New York Times, ahead of tonight’s debate.

With Tuesday’s release Biden has made public 22 years of records, and Harris 15 years.

The releases were posted to Biden’s campaign site.

-ABC News' Mary Bruce and Molly Nagle

With unprecedented unemployment in the United States, where health care is inextricably linked to employment, and a coronavirus pandemic ravaging the globe, it's safe to say that on Nov. 3, health is on the ballot.

As it stands, more than 200,000 Americans have died of COVID-19. Another 13 million are unemployed.

Health might be a political football in 2020, but it's also a deeply personal issue that affects every American voter. Given health's crucial significance this year, the nonprofit Commonwealth Fund polled 4,220 likely voters in battleground states between Aug. 25 and Sept. 20 on which health care issues mattered most to them, and which candidate -- President Donald Trump or former Vice President Joe Biden -- they thought would be more likely to address those health concerns.

Here's what the American public said about which health care issues they care about, in advance of the first presidential debate.

-ABC News' Erin Schumaker

ABC News Chief Anchor George Stephanopoulos called Tuesday's debate the worst he has ever seen in his life.

"I have to speak personally here, as somebody who's watched presidential debates for 40 years, as somebody who's moderated presidential debates, as someone who's prepared candidates for presidential debates, and someone who's covered presidential debates, that was the worst presidential debate I have ever seen in my life -- a lot more heat than light over some 90 minutes," he said.

ABC News Chief White House Correspondent Jonathan Karl said, "It looked as if both men lost this debate" but added that it was Trump who had more to lose.

"In that sense the real loser is Donald Trump," Karl added. "Donald Trump was the one that needed to change the dynamic of this race."

ABC News' Senior Congressional Correspondent Mary Bruce reported that the Biden's campaign is "feeling very good right now," following the debate, saying they believe every time Biden "went around the president" and spoke directly to the viewers "they were winning."