An unexpected schism among American youth could decide the presidential election, with young women largely leaning left to back Kamala Harris, but many men turning right to rally behind Donald Trump, according to polls.

The growing gender divide means Harris is having to fight Trump for a big chunk of the youth vote – and it's a battle that will be played out vividly on Friday.

Trump, who has already spent time with young social media influencers from the kickboxing and cryptocurrency worlds, recently headed to Texas for an interview on the Joe Rogan Experience, a podcast reaching a largely male audience of millions.

Facing the tightest of elections, the Republican ex-president is betting he can tip the scales thanks to surging support from young men drawn to his brand of macho politics, real estate business lore, and love of sports talk.

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Harris was also in Texas, but aiming her message loudly and clearly at young women.

Joined by superstar Beyoncé, the queen of US pop culture feminism, Harris delivered a speech on abortion rights in a state that has imposed some of the most radical restrictions in the country.

Overall, the youth vote still very much tends to favor the Democratic Party.

A Harvard University poll released in September of 18- to 29-year-olds who plan to vote gave Harris a 31-point advantage over Trump.

But the same poll found 70% of young women planned to vote for Harris and 23% for Trump. Among young men, however, Harris had the support of only 53%, while Trump got 36%.

A more recent NBC poll of the same age range showed an even starker divide: 59% of young women favored Harris to Trump's 26%, but among young men, the margin narrowed considerably, 42% for Harris and 40% for Trump.

"I'm worried about women's rights, and especially women's health care. It's like, they're already trying to take away our right for an abortion, what else can they take away? What's next?" asked Madeline Tena, an 18-year-old medical student in Arizona.

Tena, who follows campaign news through TikTok, said "I'm going to vote for Kamala, because based on what I've seen on social media, Kamala looks a lot better than Trump," who can appear "really childish."

On the other hand, Zackree Kline, who at 21 is working 60-hour weeks as a waiter and at a funeral home in Pennsylvania to get by, said he was won over by Trump's image as good for the economy.

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"I know a lot of people are still in favor of Trump, just because everything was a lot lower when he was president," he said, referring to prices.

Jennie Sweet-Cushman, a Chatham University political science professor, has noticed something deeper: a growing rift in how young Americans see their futures.

The women are increasingly likely to get college degrees and to leave the Republican camp, she said. The men are embracing the right.

"When I asked my students if they plan on having children, the young men pretty consistently do see themselves as having children someday. And almost none of the young women do," she said.

Studies show that a growing number of young US women are shunning traditional conservative ideas about family, marriage, and sexuality and are also distancing themselves from religion in a country where faith and politics can be closely linked.

An April poll by the Survey Center on American Life found that post-World War II, men were more likely than women to leave the religion in which they were raised.

But in Gen Z – people born from the late 1990s to early 2010s – it is the other way around, with women representing 54% of those who leave their religion.

Whether these gender dynamics will be decisive on Election Day is impossible to say, given the many variables in such a tight contest.

But one thing is clear: women are historically far more likely to vote.

"Women have outnumbered and out-voted men for over 40 years in American politics. And so there's, you know, no indicator that that would be different in 2024," Kelly Dittmar, a professor of political science at Rutgers University, said.