WASHINGTON (AP) — Increasingly convinced that the West Wing is wholly unprepared to handle the expected assault from Democrats if they win the House in November, President Donald Trump's aides and allies are privately raising alarm as his circle of legal and communications advisers continues to shrink.

With vacancies abounding in the White House and more departures on the horizon, there is growing concern among Trump allies that the brain drain at the center of the administration could hardly come at a more perilous time. Special counsel Robert Mueller's swirling probe of Russian election interference and potential obstruction of justice by Trump has reached ever closer to the Oval Office, and the upcoming midterm elections could grant his political adversaries the power of subpoena or, more worryingly, the votes to attempt impeachment.

Nine current and former White House staffers and administration allies expressed concerns Thursday that the West Wing is simply unprepared for the potential troubles ahead. They spoke on the condition of anonymity over concerns about estranging colleagues.

Attrition, job changes and firings have taken their toll across the White House, but their impact has been felt particularly in the communications and legal shops — two departments crucial to Trump staving off the looming threats. The upcoming departure of White House counsel Don McGahn has highlighted the challenges in an office that has shrunk by a third since last year.

McGahn's former chief of staff, deputy counsel Annie Donaldson, is also expected to leave soon after McGahn departs, two staffers said. Similarly, the White House press office is down to four press secretaries working on day-to-day White House matters, including Sarah Huckabee Sanders, and the regional and Cabinet affairs media teams in the communications office have been hollowed out.

The staffing shortage and struggles to recruit top-flight talent have left the White House ill-prepared to handle the legal onslaught that may come when Mueller issues an expected report summarizing his findings and the flood of congressional investigations that could follow a Democratic takeover of the House.

Former Fox News executive Bill Shine, who joined the White House earlier this summer as communications director and deputy chief of staff, is looking to rebuild a shrunken media affairs team in anticipation of the challenges ahead.

Shine is said to be looking for seasoned communications professionals to handle both Mueller-related questions and congressional oversight requests.

"He's doing a lot of thinking about how to properly structure everything, not only for a Trump White House but for what the next couple of years will be like," said former White House press secretary Sean Spicer.

But like other White House departments, the effort to fill jobs is proving difficult. Qualified candidates are steering clear of the volatile West Wing, ignoring pleas from Shine and others to join the administration over fears to their reputation and even potential legal exposure, according to current and former officials and one candidate approached by the White House. Those people and others spoke on condition of anonymity to discuss private deliberations and conversations.

Others are wary of joining the team to defend the president, knowing full well he will often ignore their advice or could turn on them by tweet.

A White House official disputed that the administration has had difficulty filling positions with talented people.

Trump allies have long boasted that he was his own political consultant during the 2016 campaign and serves as his own communications director inside the White House, but they are increasingly cautioning him that he can't be his own attorney as well.

Indeed, his outside legal team reached out to some of Washington's most prominent attorneys, including Supreme Court litigator Ted Olson, before former New York Mayor Rudy Giuliani — a longtime friend of the president whose erratic television interviews have defined his tenure — joined the team in April. Since then, Giuliani has been the primary public face of the defense team, along with Jay Sekulow, a lawyer specializing in constitutional law and religious liberties. A husband-wife duo, Martin and Jane Raskin, was also added to work behind the scenes.

At the same time, the president is more volatile than ever, creating new challenges for both his communication and legal teams.

Trump built his professional empire on a foundation of secrecy, enforced by fixers, lawyers, hush payments and non-disclosure agreements. Seeing that world collapse around him in recent weeks has yielded intense frustration in the president, who has angrily told confidants that he feels betrayed by a number of former allies, including attorney Michael Cohen and National Enquirer head David Pecker.

Trump has denounced the "sweetheart deal" received by Cohen, fumed about the overzealous prosecution of former campaign chair Paul Manafort and seethed over the pressure on Pecker to agree to an immunity deal, according to two Republicans close to the White House but not authorized to speak publicly about private conversations.

Trump signaled Thursday that he has settled on a successor for McGahn. "I am very excited about the person who will be taking the place of Don McGahn as White House Councel!" Trump tweeted Thursday. He sent a later tweet that spelled "counsel" correctly.

Trump also took a shot at reports that McGahn had threatened to resign last year if the president continued to press for Mueller's removal.

"I liked Don, but he was NOT responsible for me not firing Bob Mueller or Jeff Sessions. So much Fake Reporting and Fake News!" Trump said, referring as well to his attorney general, who recused himself from the investigation, much to the president's annoyance.

The widely expected pick to replace McGahn is White House is attorney Emmet Flood, who joined Trump's White House in May as in-house counsel for the Mueller probe and has McGahn's support in taking the role.

Praise for Flood, a veteran attorney who defended Bill Clinton during his impeachment process and represented George W. Bush in executive-privilege disputes with Congress, poured in Thursday.

"His reputation is stellar and he brings the requisite skillset and pretty much unmatched experience, having been in both the Bush and Clinton White Houses and now serving in President Trump's counsel's office," said Mark Corallo, a former spokesman for the president's outside legal team. "You couldn't ask for a more qualified and better-prepared attorney."

"I think Flood of all people seems to have clearly the experience that would be required if indeed it's needed," said Spicer.

If the Democrats win, Trump is expected to face not only possible impeachment hearings, but a bombardment of Congressional subpoenas, inquires and hearings that Democrats hope will hobble his administration, giving it little room to do much else.

"At that point," said Corallo, "the president's going to need some very skilled attorneys" — Constitutional scholars who are familiar with the past impeachments of Clinton and former President Andrew Johnson, have dozens of Supreme Court arguments under their belt, are highly respected and understand the mechanics and the politics of impeachment hearings.

But others were less concerned.

"Everybody wants to make sure he gets the best advice," former campaign adviser Barry Bennett said of the president. "But battling is something he's very good at, so he's got some home turf advantage."

Trump, too, dismissed the chatter in an interview Thursday with Bloomberg News.

"I don't think they can impeach somebody that's doing a great job," he said.

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Lemire reported from New York. Associated Press writer Eric Tucker contributed to this report.

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This story has been corrected to reflect Donaldson's current title.