As Americans head to the polls on Election Day, experts are providing insights into last-minute campaign efforts from Vice President Kamala Harris and former President Donald Trump.

Harris spent Monday crisscrossing Pennsylvania after leaving Michigan, with stops in Scranton, Allentown, Pittsburgh and Philadelphia. The vice president’s stops featured appearances from celebrities like Fat Joe, Katy Perry and Lady Gaga.

Trump hosted four rallies across three states, starting in Raleigh, North Carolina, then moving to Pennsylvania for two events, and concluding with a late-night rally in Grand Rapids, Michigan.

“He seems to be going on the strategy that if he gets his complete base out—and he believes that he didn’t get his total base out in 2020—if he gets that base out, he can prevail,” Republican strategist Bill O’Reilly said during an interview on “Mornings On 1” Tuesday. “I think it’s a bit of a risky strategy, but that’s what he's been doing in recent weeks: driving down to those base, core voters rather than trying to attract new ones. And we'll see if it's a mistake. But that’s clearly what he’s doing.”

Christina Greer, a political analyst and professor at City College, appeared alongside O’Reilly, noting that while early voting has been substantial, Election Day turnout remains crucial.

“There’s still so many Americans who only vote on Election Day. Some people like the symbolism of it, some just because of their schedules,” Greer said. “In a close election, especially in these crucial states, every vote will count.”

One factor shaping the race is the gender gap, with polling showing a significant divide. Greer noted that Harris’ campaign has sought to address issues resonating with women.

“When Donald Trump won in 2016, you know, Roe was codified, or so we thought. And a lot of women stayed home,” Greer said. “What we’re seeing also…is that it’s not just women coming out saying, ‘This is a bridge too far.’ A lot of men are coming out and saying, ‘Actually, this changes my life.’”

Meanwhile, O’Reilly said while Trump appears to be rallying his predominantly male base, Republican women have also shown a strong turnout in early voting.

“He’s going all in,” O’Reilly said. “But what we’re seeing is women turning out on the Republican side, too, in enormous numbers on the early voting.”

Looking at the balance of power in Congress, both analysts agreed that Democrats would likely take the House, with Greer noting that when presidents are elected to office, they “come in with a unified government.”