DAYTONA BEACH, Fla. (AP) -- Their party in crisis, Republicans' frustration with Donald Trump reached new heights on Wednesday as party leaders on Capitol Hill and inside New York's Trump Tower scrambled to persuade their presidential nominee to abandon divisive tactics that have triggered sinking poll numbers and low morale.
Party chairman Reince Priebus appealed to the New York billionaire's adult children to help amid new signs of a campaign in trouble.
Trump's operation has been beset by internal discord, including growing concern about general election preparedness and a lack of support from Republican leaders, according to two people familiar with the organization's inner workings.
One of the people said Trump privately blames his own staff for failing to quiet the backlash from his own party after he criticized an American Muslim family whose son, a U.S. Army captain, was killed in Iraq.
The inner tension comes as Priebus and handful of high-profile Trump allies consider whether to confront the candidate directly to encourage a new approach following a series of startling stances and statements. In the midst of the uproar over his continued criticism of the Khan family, Trump infuriated Priebus and other party leaders by refusing to endorse GOP House Speaker Paul Ryan's re-election.
The officials, including one with direct knowledge of Priebus' thinking, were granted anonymity to discuss internal strategy after one of the most tumultuous weeks of Trump's presidential campaign.
Trump on Wednesday dismissed suggestions that the GOP frustration was hurting his campaign, even as he openly contemplated an Election Day loss.
"Wouldn't that be embarrassing to lose to crooked Hillary Clinton? That would be terrible," he said during a campaign stop in battleground Florida. He also insisted, "We've never been this united."
The most powerful Republicans in Washington and New York's Trump Tower concede things will not change unless Trump wants them to.
"The candidate is in control of his campaign," campaign chairman Paul Manafort told the Fox News Network, highlighting his inability to control the nominee. "And I'm in control of doing the things that he wants me to do in the campaign."
Clinton, meanwhile, kept up her assault on Trump's business practices, holding up a Trump-branded tie as she spoke at the Knotty Tie Company in battleground Colorado.
"I really would like him to explain why he paid Chinese workers to make Trump ties," she told employees in Denver, "instead of deciding to make those ties right here in Colorado."
Trump blamed the media -- "so dishonest" -- for growing criticism of his recent statements and his unwillingness to accept guidance from senior advisers.
Privately, however, Trump has concerns about his own team.
He was deeply upset when GOP leaders "took the other side" during his ongoing quarrel with the Khan family, one person said, and blames his campaign staff for not keeping top Republicans in line. Another person said Trump is irritated that general election planning in battleground states isn't further along with less than 100 days until Election Day.
The internal tension is complicated by Trump's frequent travels without his senior advisers and his adult children, who wield significant influence in the campaign, the people close to the campaign said.
There's been no follow-through on a plan presented earlier this summer to have one of the children or son-in-law Jared Kushner travel with Trump most of the time.
While the children have made some appearances with their father -- for instance, Eric Trump attended Tuesday's rally in Virginia -- work obligations and other commitments, including a hunting trip the sons have lined up, have posed scheduling conflicts.
"I would say in the last couple of weeks, he has been remarkably underperforming and we'll see whether or not he can take a deep breath and learn these lessons," said former House Speaker Newt Gingrich on Fox Business News.
Trump's vice presidential nominee, Indiana Gov. Mike Pence, tried to put a better face on a recent difference during a phone interview with Fox.
Pence said he spoke with Trump Wednesday morning "about my support for Paul Ryan and our longtime friendship. He strongly encouraged me to endorse Paul Ryan in next Tuesday's primary. And I'm pleased to do it."
Trump stunned Republicans by telling The Washington Post in an interview Tuesday that he wasn't ready to endorse Ryan, who faces a primary contest in Wisconsin next week. Ryan has backed Trump despite deep differences on policy and temperament, and has encouraged other Republicans to unite behind the party's nominee.
Former Trump adviser Barry Bennett acknowledged signs of poor morale among the campaign staff he maintains contact with, but he also said it would be silly dismiss Trump's chances with three months before Election Day.
"This would be the end of any other Republican candidate in the history of the country. And he's only 5 or 6 points behind," Bennett said.
Indeed, Trump on Wednesday reported raising $80 million in July for his campaign and the Republican Party, a significant improvement from past months. Clinton raised about $90 million over the same period.
Trump loyalists continue to stand behind him.
"Mr. Trump is somebody who believes that if he's attacked or the country's attacked, he's going to defend himself and he's going to defend the country," said New Hampshire Rep. Stephen Stepanek.
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