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

Vice President Kamala Harris' campaign said late Saturday night that former President Donald Trump "appears to be unraveling" following one of his North Carolina rallies.

Trump said at his event in Greensboro that he would be "in trouble" if he loses the election "after all this talk."

"Please go and vote," Trump said to attendees. "I mean, I came here, whatever the hell time it is, who the hell knows -- I'm giving you the full board … I would have been home sleeping right now."

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

Former first lady Michelle Obama spoke at a rally in Montgomery County, Pennsylvania, Saturday night evoking the "yes we can" ethos and slogan of former President Barack Obama.

Her theme was that of a divided America, and her call to voters one of staying the course and defeating the "conman" who she said wishes to "tear" the country apart -- though Obama did not mention former President Donald Trump by name.

"It always felt as though, even with our differences, something true, something fundamental, was stitching us together, the values that have guided and nourished us for generations," Obama said, as quoted by ABC News' Philadelphia station WPVI.

"Pennsylvania -- this is who we are, this is us," she added. "This is our creed as Americans, that if we keep our feet on the ground and our eyes on the horizon, we will leave this country a little better than we found it."

"The tactics to tear it apart are not new," Obama continued. "Sadly, they have become more insidious, more cunning, led by a more skilled conman who is more brazen and bombastic. But this, too, is part of the great experiment that we call democracy. Can people who strongly disagree still find common ground?"

She continued: "We have had our fair share of dark moments, some lasting for decades, stretches of time that have been hard and scary, but for anyone who's ever endeavored to build or do something hard or scary, erecting a skyscraper, scaling a mountain, even a child building a sand castle, you learn very quickly that it's a lot easier to destroy than to build up."

Obama hit out at Trump's campaign without naming him, criticizing "the folks telling us that things may not be as they appear, that we should be suspicious of our neighbors, that military service and sacrifice is for suckers, that there's an enemy from within."

"Every time I hear someone say that the hope and pride that I feel for the country I love is misplaced, that down is up and right is wrong -- my god, it's bewildering. It is dangerous. It is shameful."

-ABC News' Gabriella Abdul-Hakim

Coming from a rally in Charlotte, North Carolina, Air Force 2 made a surprise landing at LaGuardia Airport Saturday evening.

Vice President Kamala Harris made a quick appearance on “Saturday Night Live,” joining her doppelganger Maya Rudolph during the show’s cold open.

The matching duo traded lines rhyming words with Kamala, "The American people want to stop the chaos, and end the drama-la, with a cool new step mom-ala."

Continuing on, "watch a rom-com-ala, like 'Legally Blonde'-ala, and start decorating for Christmas, fa-la-la-lala."

The vice president stepped out from behind the mirror to join Rudolph in saying, “Live from New York, it's Saturday Night!”

Harris has previously endorsed Rudolph’s “SNL” impression of her while on “The View” last month, saying, "Maya Rudolph, she's so good, she had the whole thing, the suit, the jewelry, the mannerisms."

Speaking during his second North Carolina rally of the day, former President Donald Trump called himself the “father of fertilization,” as he described conversations with an Alabama senator about in vitro fertilization treatments.

“I consider myself to be the father of fertilization,” said Trump to laughs from the audience, explaining his support for IVF, which was thrust into limbo in Alabama after a court decision in the wake of the Supreme Court overturning Roe v. Wade.

“Katie Britt, the senator from Alabama, called up. ‘Sir, you have to help us. You have to help us. I said, ‘Explain.’ She said, ‘About what happened with the IVF. The judge said, close all the clinics all over Alabama.’ And she said, ‘Everyone is furious.’ I said, ‘Explain it to me.' And when she explained, it took me about two minutes to figure it out, and I came out with a very strong statement, totally in favor.”

Trump attacked Vice President Kamala Harris for saying he would attempt to limit IVF treatments, distancing himself from the far-right think tank proposal Project 2025.

"I've never read it. I don't want to read it, because that way I can be honest with you, I don't want to read it. Some people got together. I assume they're extremely conservative, that's OK. Then they came up with a plan. But I told them, I don't know about the plan. They had a couple of people that work for me in the administration, I guess, or something. But they came up with some kind of a plan, and it's on the conservative side, I assume. And they keep talking about Project 2025, but I said, I don't know about it … Everything she says is a lie."

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