Vice President Kamala Harris spent her final day on the campaign trail this election cycle barnstorming the battleground state that brings the biggest prize, Pennsylvania. 

At a rally in Pittsburgh as she rounded out her long day in the Keystone State, the vice president struck an optimistic tone, declaring that her campaign is seeing the momentum it needs to carry her to victory.

"The momentum is on our side," Harris told the crowd. "Maye no mistake, we will win."

She closed out the day in Philadelphia, holding a rally outside the city's iconic art museum that drew a massive crowd. With a tip of the hat to the film "Rocky," which sees the titular character climb the 72 stone steps to the museum, the vice president called the stairs a "tribute to those who start as the underdog and climb to victory."

"You will decide the outcome of this election, Pennsylvania," she told the crowd. "We finish as we started: with faith, with optimism, with joy."

"Philadelphia, are you ready to do this?" she asked. "Are we ready to win?"

Addressing supporters at a rally in Allentown on Monday, Harris built on the same closing message she has expressed on the trail in the campaign's final days, framing Tuesday’s election as a fight for freedom, the future and democracy and declaring that “momentum is on our side.” 

“And we have an opportunity in this election to finally turn the page on a decade of politics that have been driven by fear and division – we’re done with that, we’re done,” Harris said. “And we’re exhausted with it. America is ready for a fresh start.” 

Harris reiterated that she is “not afraid of tough fights,” citing her background as a prosecutor and attorney general in California and echoed her pledge to listen to those who disagree with her. 

The vice president also used her stop in Allentown, which is home to a large Puerto Rican community, to specifically highlight her support for the U.S. territory after a comedian’s comment at former President Donald Trump’s rally at Madison Square Garden earlier this month sparked significant backlash when he referred to it as a  “floating island of garbage.” 

“I stand here proud of my long-standing commitment to Puerto Rico and her people and I will be a president for all Americans,” Harris said on Monday. 

The vice president started the day at a canvas kickoff event in Scranton, the birthplace of her current boss, President Joe Biden. 

Addressing volunteers working to drive her supporters to the polls in the final stretch, Harris recounted her first campaign for district attorney in which she said she used her ironing board as a makeshift “standing desk” to hold her fliers outside the grocery store as she spoke to voters. 

“And I will tell you, that is how I love to campaign,” she said. “I don't do it as much anymore, obviously, but what you all are signing up to do today, and what you've been doing like, let's enjoy it.”

“And I know you do, I can feel the mood in here, because it's the best of who we are as a democracy, and that’s what our campaign has been about,” Harris added. 

Harris condemned her opponent, Trump – who she did not refer to by name and instead called “the other guy,” a move Biden deployed early in his presidency – for seeking to divide people and make them feel alone. In contrast, the vice president encouraged her volunteers to use the campaign’s closing hours to bring people together. 

“And so the way I've always been thinking about our campaign and these next 24 hours is, as we are getting out the vote, as we are canvassing, let's be intentional about building community, about building community, about building coalitions, about reminding people we all have so much more in common than what separates us,” Harris said. “There is a power in that.” 

Harris later headed to Pittsburgh and Philadelphia for two separate rallies and concerts. The Pittsburgh event featured performances by DJ D-Nice, Katy Perry, and Andra Day while the Philadelphia event saw DJ Cassidy, Fat Joe, Lady Gaga, Ricky Martin, Oprah Winfrey and more take the stage.

In Las Vegas, performers included Christina Aguilera and electro-dance duo Sofi Tukker. In Raleigh, North Carolina, Sugarland, the country music duo of Jennifer Nettles and Kristian Bush, took the stage.

In Detroit, performers included Jon Bon Jovi, who sang a quiet acoustic version of his band's working-class anthem “Livin' on a Prayer.”

"Go to the polls tomorrow, let’s elect Kamala Harris and Tim Walz, America’s countin’ on you," Bon Jovi said.

"Pittsburgh, listen, we've got one day left to get this done," Harris said. "So now we work to get out the vote. Let's reach out in these next 24 hours to family and friends and classmates and neighbors and coworkers, and as we do that, let us really be true to what our campaign has been about from the very start. And on that, I say please, let us be intentional about building community. Let us be intentional about building coalitions."

"So much about these last several years has been about trying to make people point their fingers at each other, to have Americans point their fingers at each other, to try and have people feel alone or feel small," Harris said. "But let us do the work as we work toward this win, a building of community and coalition and reminding everyone that we have so much more in common that separates us. Let that be our goal."

"And let us remind everyone: Your vote is your voice, and your voice is your power," she added to cheers. "So one last time, Pittsburgh, I ask you: Are you ready to make your voices heard?"

Both of the evening events are a part of the campaign’s series of concert-style organizing events in all seven battleground states Monday night that will be tied together in a national live-streamed show. 

In Reading on Monday, which has a sizable Puerto Rican population, Harris stopped at a Puerto Rican restaurant with New York Rep. Alexandria Ocasio-Cortez, who is of Puerto Rican descent, and Gov. Josh Shapiro, the Keystone State's popular Democratic governor and a key advocate for the vice president.

Harris spoke with the restaurant's owner and other voters, and placed an order that included cassava, yellow rice and pernil, a pork dish that's a staple in Puerto Rican cuisine.

Later, Harris went door-knocking in Reading. At one house, a woman answered the door and met the vice president with surprise and a hug.

"How's it going?" the woman asked the vice president after introducing her husband.

"Well, it's the day before the election," Harris replied, saying she wanted to make sure she earned the woman's vote.

She did, the woman assured the vice president, telling Harris she voted early, would be working the polls Tuesday and her husband would be voting on Election Day.

At another house, she met a couple and their adult son, Cole. "That's our son's name," Harris excitedly replied.

On a call with reporters, Harris campaign chair Jen O’Malley Dillon referred to the effort as the “largest interconnected GOTV event in political history,” noting the goal is to “capture the grassroots enthusiasm” and mobilize voters heading into election day on Tuesday. 

“Obviously, we have seen all along, we believed all along, this race is going to be incredibly close, and so it's really going to come down to mobilization and that's why an event like tonight matters so much,” O’Malley Dillon said. 

While Harris is crisscrossing Pennsylvania on Monday, her running mate, Minnesota Gov. Tim Walz, is touring the other critical so-called “blue wall” battlegrounds of Michigan and Wisconsin. Walz will headline the campaign’s rally and concert in Detroit as part of the interconnected stream of events. 

The blue wall states of Pennsylvania, Michigan and Wisconsin – which voted for Trump in 2016 but flipped back to blue to support Biden in 2020 – are considered key for Harris. Asked which Sun Belt swing state the campaign feels best about winning if Harris loses one of the blue walls, the vice president’s team demurred, insisting it has “multiple pathways” to getting enough votes to win. 

Meanwhile, the Harris team said it is preparing for the potential that the nation will not know the result of the race for several days, as was the case in 2020. O’Malley Dillon said the campaign expects to have near complete results from Georgia, North Carolina and Michigan by the end of election night along with partial results from Pennsylvania, Wisconsin and Arizona. The next morning, the campaign expects most of the results from Wisconsin to have rolled in, along with additional tallies from Pennsylvania and Michigan. Votes counts in Pennsylvania, Arizona and Nevada will continue to trickle in, the campaign believes. 

“We all know that it's going to take some time to get election results,” Dana Remus, Outside Counsel to the campaign said on Monday’s call with reporters. “We also all know that Trump will likely use this time to allege fraud, spread [misinformation] and claim premature victory, but I want to be very clear that these efforts will fail.”

“Voters select the president, not Donald Trump,” Remus added.