Live election updates: 80 million have voted early as Trump, Harris sprint to finish

Highlighting how important Pennsylvania and its 19 electoral votes are to her campaign, Kamala Harris is spending her last full day on the trail with multiple events in the state.

Her search for voters includes a rally in Allentown and then she ends with an event in Philadelphia.

Donald Trump is trying to shore up support in battleground North Carolina - where Harris has made inroads - for a rally in Raleigh, before he, too, heads to Pennsylvania for events in Reading and Pittsburgh before ending his final day campaigning in Grand Rapids, Michigan.

Americans are voting as two major conflicts rage and others threaten to erupt.

The showdown between Vice President Kamala Harris and former President Donald Trump will in many ways be a choice between foreign policy continuity and change.

Harris has largely stuck to President Joe Biden's world agenda, one in which the outgoing leader sought to revive traditional American statesmanship after four turbulent years of Trump.

Trump is bidding for a second term with twin promises of "America first" with "peace through strength," accusing Biden, Harris and many other leaders of facilitating global instability through weakness and incompetence.

The Democratic ticket is framing Trump as a chaotic leader easily taken advantage of by more wily foreign adversaries.

As Americans head to the polls on Tuesday, the world will be watching as closely as ever.

-ABC News' David Brennan

Men and women have been voting differently in presidential elections for decades. But could the gender gap be the deciding factor in this year's razor-thin race between Vice President Kamala Harris and former President Donald Trump?

Could the gender gap be the deciding factor in this year's razor-thin race between Kamala Harris and Donald Trump?

The final ABC News/Ipsos poll before Election Day, released on Sunday, found the gender gap among all likely voters to be 16 points. Harris had a 11-point advantage among women, 53% to 42%, while Trump had a 5-point advantage among men, 50% to 45%.

The gender gap has averaged 19 points in presidential exit polls since 1996. Some observers, though, believe it could reach a new level in 2024.

"With a woman versus a man at the top of the ticket and with the prominence of the abortion issue in the wake of the Dobbs decision, we could have a historically large gender gap approaching a gender chasm this year," Whit Ayres, a longtime Republican pollster, told ABC News.

The formula to success for Harris would be to win women by more than she loses men. The reverse is true for Trump.

"When you're talking about dead heat races in seven swing states, anything could be the deciding factor," Ayres said.

-ABC News' Alexandra Hutzler