WASHINGTON -- Embattled Rep. Max Miller is lending his campaign $1 million, as he faces pressure to drop out of his competitive Ohio re-election race over allegations of domestic abuse, the latest sign that the two-term congressman is determined to stay in.

Miller said he plans to transfer $1 million to his campaign in two installments of $500,000. "I am invested in this election in every way and I will invest the resources into my campaign to win," he said in a statement.

The loan puts Miller at a significant cash advantage over his Democratic opponent, even as Miller faces pressure from Republicans to step down over the abuse allegations, which he denies.

"I am in this for the long haul," Miller said. "I know there are some people that are concerned about my ability to win this race right now, but I don't share that."

On Sunday, Sen. Bernie Moreno, an Ohio senator and Miller's former father-in-law, said Miller shouldn't serve in the House and urged him to "seek professional help to end the clear pattern of abuse he has left in his wake." He later elaborated, telling reporters "This has been a horrific experience for my entire family." On Thursday, Ohio's other senator, Republican Jon Husted, called on Miller to withdraw from the race and resign from Congress.

Moreno's daughter, Emily Moreno. has accused Miller in court filings and police reports of throwing boiling water at her, holding a gun to her head and other physical abuse. She also alleges that their daughter's collarbone was broken while she was under Miller's care.

Miller said that the Cuyahoga County Division of Children and Family Services, after an investigation, found that accusations he had abused his daughter weren't substantiated. Both parents share custody of their daughter.

The divorce, which was finalized last year, and custody arrangements have been acrimonious.

Moreno has said that Miller once withheld a blue stuffed bunny that the couple's 2-year-old daughter slept with and refused to hand it over to a person who came to pick it up.

Miller this week posted text messages to defend himself. The texts showed that the congressman withheld his daughter's bunny because the person the Moreno family sent violated the parents' agreement. The bunny and the 2-year-old were reunited after 14 hours, according to Miller.

A spokesman for the Ohio Secretary of State said Miller can withdraw and be replaced if he does so by Monday. After that, his name will be on the ballot in November. The allegations have alarmed Republicans who said the district they didn't expect to defend could now be vulnerable.

Some Republicans had held out hope that Miller might listen to President Trump, his former boss when Miller worked at the White House in the first term. So far, Trump hasn't publicly called for Miller to withdraw, though he told Miller in a phone call on Monday that the race would be tough to win.

Trump has privately told some advisers that he thinks Miller should step aside, according to a person with knowledge of his comments. White House officials and others close to Trump also want him to withdraw, people who have spoken to them said.

Democrats only need a net gain of three seats to take control of the House. House Speaker Mike Johnson has stayed out of the race, telling Politico earlier this week that he wants an Ethics Committee investigation into the allegations to play out. "There's all sorts of domestic events going on with 435 members of Congress all the time, it's not my business to get engaged in it," Johnson said.

Miller is set to face Brian Poindexter, an iron worker and Brook Park city councilman who is endorsed by Sen. Bernie Sanders (I., Vt.) and several unions.

Poindexter said Miller staying in the race doesn't change his campaign strategy.

"I do not want to make this about Max Miller's allegations because there are victims of those allegations and for their sake we should definitely just continue on our message," he said in an interview.

He added, "As a father of two daughters, if they came to me with these accusations, I would believe them."

The first-time congressional candidate has been outraised by Miller. His campaign brought in just over $603,000 this cycle compared with Miller's roughly $2.1 million, according to Federal Election Commission filings through June 30.