Ivanka Trump has been surfing. She’s posed in front of the Eiffel Tower, and attended a Formula 1 party in Miami in a race-car red dress. She’s hung out with her children in a hot tub, with Kim Kardashian in Malibu, and with her husband, Jared Kushner, at the Acropolis.

The one place Ms. Trump hasn’t been, however, is the campaign trail. And though she has been upfront about her absence, politically speaking, it remains somewhat mysterious. During former President Donald J. Trump’s last two bids for office, Ms. Trump appeared at rallies, in television ads and on national convention stages, often with the implicit role of appealing to female voters.

But nearly two years ago, as her father started a third run for the White House, Ms. Trump announced that she and Mr. Kushner would be stepping back from politics to prioritize their children and family life.

“While I will always love and support my father, going forward I will do so outside the political arena,” she said.

So it is in her father’s fiercest and potentially final campaign that Ms. Trump — his oldest daughter, one of his former top aides and perhaps his closest family member — has become a nearly silent observer, with seemingly no intention of boosting his candidacy in any public way.

That decision to separate herself from her father’s politics comes as Mr. Trump has faced the prospect of four separate criminal trials, including one in her — and his — former home of Manhattan, where he was convicted of 34 felonies in late May, and one in Washington, in connection with the Capitol riots of Jan. 6, 2021. One of Ms. Trump’s most prominent appearances during the 2024 race has been at her Mr. Trump’s civil fraud case last fall, when she testified that she wasn’t “privy” to her father’s finances.