Trump says he 'shouldn't have left' the White House

Harris is enlisting some big names for her Pennsylvania rallies on Monday night -- on the eve of Election Day -- with Oprah Winfrey, Lady Gaga, Katy Perry and Ricky Martin among those performing or delivering remarks, her campaign announced Sunday.

At Harris's penultimate rally of the campaign in Pittsburgh, D-Nice, Katy Perry and Andra Day are set to perform. While in Philadelphia, the last campaign event Harris plans to hold, Winfrey, Lady Gaga, Ricky Martin, Jazmine Sullivan and Adam Blackstone, The Roots, DJ Cassidy, Fat Joe, and Freeway and Just Blaze will make appearances, the Harris campaign said.

"These artists and public figures are trusted voices for millions of Americans, who listen to their music, follow them on social media, or otherwise are inspired by them," the campaign said. "The Harris-Walz campaign believes that by using their voices to lay out the stakes of this election, it will further encourage and mobilize people to go vote."

Harris and second gentleman Doug Emhoff will attend both rallies.

The campaign said it is giving VIP seating to those who volunteer to phone bank or knock on doors in the last weekend before the election as an incentive.

These performances will be meshed together in a national simultaneous livestream. Rallies will be held in other battleground states. In Phoenix, for example, La Original Banda El Limón will perform, and in Detroit, the Detroit Youth Choir, Jon Bon Jovi and The War and Treaty will perform, according to the campaign.

-ABC News' Fritz Farrow, Gabriella Abdul-Hakim and Will McDuffie

Speaking to CNN in his first interview on the campaign trail, former President Bill Clinton compared Trump’s impact on today’s political climate with fascism in the 1930s, and called the possibility of him getting reelected a "travesty."

"I don’t know if we can survive or not. I think it would be a travesty if he became president again," Clinton said.

Clinton expressed concern with the outcome of the election -- whether Trump wins or loses.

"What has surprised so many people -- although I’m sure this happened in the '30s throughout Europe, when they were considering things with fascism -- a lot of people just can’t believe how many voters in America agree that [Trump] doesn't make sense, agree that he's advocating things that would be bad, but somehow think that if the experience was good for them back then, it was magically his doing and everything was fine. So, I don’t know what's going to happen," Clinton said.

-ABC News' Emily Chang and Oren Oppenheim

Harris visited a Black church in Detroit on the last Sunday ahead of Election Day and called on churchgoers to turn their faith into action.

“Church, in just two days, we have the power to decide the fate of our nation for generations to come, and as we prepare for that moment, I am reminded of a passage from Scripture,” Harris said, addressing the congregation at the Greater Emmanuel Institutional Church of God in Christ. “The prophet Jeremiah wrote, ‘For I know the plans I have for you. They are the plans for good and not for disaster. To give you a future and a hope.’”

“Church, God has a plan for us. He has good plans for us, plans that will heal us and bring us together as one nation, plans for freedom, plans for opportunity, plans for justice,” Harris added. “But let us remember it is not enough to just believe in those plans. We must act. Not enough to only pray, not enough to just talk. We must act on the plans he has in store for us, and we must make them real through our works, in our daily choices, in service to our communities and yes, in our democracy.”

Harris again praised young people for being righteously impatient and demanding better of America before making an apparently veiled critique of Trump.

“As I travel our nation, I see neighbors helping neighbors who were perfect strangers before, but now neighbors, recover and rebuild from disasters. I see voters standing together to defend freedom,” Harris said. “And while we know there are those who seek to deepen divisions, sow hate, spread fear and cause chaos, this moment in our nation has to be about so much more than partisan politics. It must be about the good work we can do together, about our fundamental values and about us as Americans and as people of faith.”

She later added: “Let us turn the page and write the next chapter of our history, a chapter grounded in a divine plan big enough to encompass all of our dreams, a divine plan strong enough to heal division, a divine plan bold enough to embrace possibility, God's plan.”

“And in these next two days, we will be tested,” Harris continued. “These days will demand everything we've got. But when I think about the days ahead and the God we serve, we were born for such a time as this. The road ahead won't be easy, but in times of uncertainty, we are reminded weeping may endure for our night, a joy cometh in the morning, and Church, morning is on its way.”

-ABC News’ Fritz Farrow, Gabriella Abdul-Hakim and Will McDuffie

Trump continued espousing violence against journalists at his rally in Lititz, Pennsylvania, on Sunday, suggesting he wouldn't mind if they were shot.

At one point, Trump pointed towards the press pen in front of him and called the reporters "my glass" as he complained about gaps in the protective glass surrounding him and a possible attack from a sniper, which he said could happen "any minute now."

"I have this piece of glass here, but all we have really over here is the fake news. And to get me, somebody would have to shoot through the fake news. And I don't mind that so much," he said.

Asked about the remarks by ABC News, campaign National Press Secretary Karoline Leavitt defended Trump, saying "obviously he was joking."

Leavitt called the question "exhausting" and accused the media of picking "apart every single word that Donald Trump says when the majority of his speeches are focused on the issues that Americans care about."

-ABC News' Lalee Ibssa, Soorin Kim, Kelsey Walsh and Janai Norman