Live election 2024 updates in the Philadelphia region and the focus on Pennsylvania

The Harris campaign's massive election eve rally on the Benjamin Franklin Parkway in Center City drew thousands of attendees Monday night.

Pennsylvania Senator Bob Casey and Philadelphia Mayor Cherelle Parker kicked off the event.

"We are all gathered here tonight, and 248 years ago to be exact, our democracy was born. Despite what we hear from that other guy, remember, we live in the greatest nation in the world," she told the crowd.

Thousands attend Harris campaign's massive election eve rally on Ben Franklin Parkway

"I want to thank you all for being here and what you're doing for our commonwealth and country at this moment. All the work that's being done, all the doors being knocked on -- it's because of your work. And we appreciate that commitment to our country at this critical time," Casey said.

The event, which was right outside the Philadelphia Museum of Art, was just as much a concert as it was a rally.

People came to see the star-studded lineup, including Lady Gaga, Oprah, The Roots, Jazmine Sullivan, Freeway and Just Blaze, DJ Cassidy, Fat Joe, DJ Jazzy Jeff, Ricky Martin, and Adam Blackstone.

To end the night off, Vice President Kamala Harris took the stage shortly after 11 p.m.

"It's good to be back," Harris told the cheering crowd as she walked on stage.

During her speech, Harris made a final push to get people out to vote on Election Day.

"We have one day to get this done, so now we need to get to work and get out to vote," she said. "We have so much more in common than what separates us. And let us remind everyone -- your vote is your voice, and your voice is your power."

"So tonight I ask you one last time, are you ready to make your voices heard?" she asked the crowd, who responded in cheers. "When we fight, we win!"

This event marked the final push ahead of Election Day for the Harris campaign to make its mark in Pennsylvania, a key battleground state.

Sen. JD Vance delivered his closing message to the voters of Newtown, Pennsylvania, on Monday, advocating for former President Donald Trump to be elected back to the White House.

Vance told the crowd that the only way the country would get a person who is fit to be president is by voting for Trump.

JA Vance rallies in Newtown, Pennsylvania. Sharifa Jackson reports for Action News on Nov. 4, 2024.

"So tomorrow, we're going to say to Kamala Harris, you are fired. We don't want you in the White House. We don't want you in the Oval Office, we don't want you anywhere near the halls of power," the vice presidential candidate said.

Vance again brought up the recent "garbage" comment controversy, falsely claiming Harris called Trump supporters "garbage."

"So, to Kamala Harris, you shouldn't be calling your citizens garbage. You shouldn't be criticizing people for daring to criticize you for doing a bad job. And our message to the leadership, to the elites of the Democratic Party -- the people of Pennsylvania are not garbage for struggling under your leadership. But tomorrow, the people of Pennsylvania are going to take out the trash in Washington, D.C., and we're going to do it together," Vance said.

Harris is effectively tied with Trump among likely voters in an Ipsos national poll published Monday evening.

If the election were held today, half of likely voters said they would vote for Harris and 48% said Trump, the poll found.

When American adults were asked which candidate has a better plan, policy or approach to the following issues, Harris led on health care and political extremism, while Trump had more support for the economy, immigration and war/foreign issues, the poll found.

The poll was conducted Nov. 1-3 and has a margin of error of +/- 3.4 percentage points for likely voters and +/-3.0 percentage points for American adults.

-ABC News' Emily Chang and Oren Oppenheim

In what campaign aides are classifying as his "closing message" speech, former President Donald Trump is already setting expectations for his supporters to challenge the results of the election, saying Vice President Kamala Harris only has a 4% chance of winning the race.

"So based on what I'm hearing -- she's at 4%. And so we never want to take anything for granted. But we're really doing well," Trump said during his rally in Pittsburgh, Pennsylvania.

Trump again falsely accused Democrats of cheating in the 2024 election, but added that it's "too big to rig."

"I do believe it is too big to rig. They'll try. And they are trying, you know, though. It's too big to rig. This is a big movement," Trump said.

Doubting the fact that President Joe Biden legitimately won the 2020 Election, Trump said that he has since learned.

"This is that big, powerful, vicious party -- that's a vicious machine. They can take all these bad ideas and win elections." he said.

The comments come as the Trump campaign has 230,000 poll observers along with 500 attorneys in every battleground state.

-ABC News' Soo Rin Kim, Lalee Ibssa and Kelsey Walsh