The Democratic nominee for US president, Kamala Harris, picked up an endorsement from a key social media influencer: the Olympic rugby star Ilona Maher.

Related: US rugby star Ilona Maher hailed as ‘feminist trailblazer’ for swimsuit shoot

“I think it’s going to be cool because there is an opportunity to have female representation and to change this country in a way that I think will benefit us,” Maher told Sports Illustrated, in an interview accompanying a swimwear shoot which saw the 28-year-old center praised as “a feminist trailblazer”.

“That’s a Kamala Harris endorsement,” Maher told the magazine, which said she cited abortion rights and access to contraception as key concerns as the presidential election looms.

Harris, the current vice-president, has made protecting such rights a central part of her campaign against Donald Trump. As president, the Republican nominee appointed three hardline rightwingers to the US supreme court, which then removed the federal right to abortion and suggested contraception access could also be brought into question.

“I have enough money that if I didn’t need an abortion, I could raise a baby myself,” Maher said. “If I wanted to get abortion, I could do that. So I have that privilege [but] it scares me about the other girls. I have options and I want to remember that my followers don’t all have that. And so it’s like, for me, but also mostly for them.”

Maher took up rugby in high school in Vermont then won three national collegiate titles with Quinnipiac University in Connecticut. She built a significant social media following in the first phase of her international career, which began in sevens in 2018 and has also brought her two 15-a-side caps. The recent Paris Games saw her rocket to global fame.

Maher is now the most-followed rugby player in the world, eclipsing giants such as Siya Kolisi, the South Africa captain and double World Cup winner, and the former New Zealand fly-half Dan Carter.

Related: Ilona Maher: how a US rugby sevens player became one of the biggest stars of the Games

Speaking to SI, Maher said men “get to play rugby and they get paid millions of dollars while we make minimum wage and this won’t be a career for us. I have teammates going into the workforce now, whereas these guys are down there and rugby’s it” for them.

Nonetheless, Maher has achieved fame (and endorsement deals) with a message based on body positivity and irreverent humor but also the sort of dynamic and aggressive play that helped the US win bronze in Paris. This week, Maher told followers she wanted to win a place on the US squad for the 15-a-side World Cup, to be held in England next summer.

Such has been Maher’s impact since Paris, her Sports Illustrated shoot followed an appearance on NBC’s Late Night with Seth Meyers in which she called rugby “a sport that just really encourages you to be physical and show what your body’s capable of”.

“I know what it’s done for me,” Maher said, “and how it’s changed my body confidence by making me feel so good about myself, and I know it can do it for so many other girls.”

Speaking to Sports Illustrated, Maher said she “was a big girl growing up so I didn’t love being in pictures” and “was always … called masculine or whatever. But I never felt that way. But I don’t think you’re going to bully the girl who could probably beat you up in a rage. I love that [rugby] showed me what I can do. It showed me how capable my body is and it’s not just like a tool to be looked at and objectified.”

Related: US women took rugby bronze – creating a golden chance to grow the American game | Martin Pengelly

She also said: “If my cellulite was lower in that perfect range, I wouldn’t be doing what I could do. I wouldn’t be that powerful for it [so] I just really think sports have been so helpful.”

MJ Day, editor in chief of Sports Illustrated Swimsuit, called Maher a “revolutionary athlete and feminist trailblazer… a modern-day role model of strength, conviction and authenticity”.

Maher expressed unease with being seen as a role model, saying: “I just try to really stress like I am human. But I think I do really care a lot. And I do want people to like me.”

Harris, 59, has no known ties to rugby. But her current boss, Joe Biden, has often spoken of his love for the game, having played at college in New York and through following the Irish national team, two recent members of which, Rob and Dave Kearney, are the president’s distant cousins.

The Harris campaign did not immediately respond to a request for comment.