U.S. Senator Bernie Moreno (R–Ohio) said his former son-in-law, Representative Max Miller (R–Ohio), should not serve in the House of Representatives and should "seek professional help," as Miller defended himself against domestic abuse allegations during a live video on X this past Sunday.

Moreno, who had remained publicly restrained for months while a bitter custody dispute played out between Miller and the senator's daughter, Emily Moreno, issued a lengthy post stating: "If there are any basic standards of character required to hold elected office, Max Miller fails them. He should not serve in the House of Representatives."

The senator went further, writing that Miller "needs serious psychological help. He is a danger to my daughter, and I hold my breath every minute he has custody of my granddaughter."

Miller announced Sunday that he will remain in his reelection race, ahead of a Wednesday deadline to replace him on the ballot. Under Ohio election law, if a candidate withdraws before that deadline, the party's central committee can select a replacement nominee — a process that adds urgency to the coming days. Democrats have identified a new opening in his northeast Ohio congressional district, a reliably Republican seat, as the incumbent faces intensifying pressure over the abuse allegations stemming from a protracted custody battle with his ex-wife.

"I'm not dropping out of this race and I'll win in November," Miller said, denying that he had abused his former wife or their daughter.

The accusations against Miller — who has been endorsed by President Donald Trump and previously served as a White House adviser during Trump's first term — have been public for years. They have recently drawn heightened scrutiny as the legal back-and-forth has escalated.

Emily Moreno has alleged that Miller scalded, hit, and threatened her during their marriage. Miller denied those allegations in the video, as he has consistently done in the past.

"It's incredibly upsetting," Miller said as he walked through a list of the accusations.

Miller also stated he had no involvement in a broken collarbone suffered by the couple's 2-year-old daughter, an injury that prompted Emily Moreno to contact authorities. The couple, who married in 2022 and finalized their divorce last year, have offered differing accounts of how the injury occurred, according to court filings and police reports detailed in a Mother Jones article that first revealed the child's injury.

Alongside his announcement, Miller released a voluminous cache of investigative and court documents tied to the custody dispute.

Stefan Mychajliw, a spokesperson for Emily Moreno, called the video "shameful" on Sunday.

"No loving parent would have ever used their daughter as a PR pawn to save their own political career," Mychajliw said. "Miller can lie and spin on X, but he cannot do so under oath in a court of law. We are confident that justice will prevail in court."

Senator Moreno's statement on Sunday marked a departure from his months-long refusal to comment on the specific allegations. Just last week, spokeswoman Reagan McCarthy issued a statement saying the senator "will not litigate these matters in the media or respond to baseless public attacks."

"Senator Moreno's top priority is the safety and well-being of his daughter and granddaughter," McCarthy said at the time.

The senator's intervention is reportedly causing concern among Ohio Republicans, where Trump-endorsed candidates like Miller typically prevail with ease. According to a high-ranking Republican who spoke on condition of anonymity due to the sensitivity of the matter, names being floated as potential replacements should Miller exit the race include State Representative Mike Dovilla — a U.S. Navy veteran and former presidential appointee to the Office of Personnel Management — and Kevin Coughlin, a former state senator and representative who sought the U.S. House in both 2024 and 2026.

Democrats have called on Miller to resign, requested a congressional ethics investigation through the House Ethics Committee, which has the authority to review allegations of misconduct by sitting members, and signaled that additional resources may be directed toward his Democratic opponent, union ironworker Brian Poindexter, in the fall.

Miller won reelection two years ago with just over 51% of the vote.

This story was originally featured on Fortune.com.