President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE's former campaign manager Corey Lewandowski Corey R. LewandowskiHow Trump can win reelection: Focus on Democrats, not himself Trump Jr. distances from Bannon group, says he attended 'single' event Bannon, three others charged with defrauding donors of 'We Build The Wall' campaign MORE said in an interview broadcast Sunday that Trump and Republicans are "in trouble" if Democrats retake the House in the 2018 midterms.

In an interview with John Catsimatidis on New York radio station AM 970, Lewandowski said that Democrats have some "good opportunities" to win the 24 seats the party needs to retake the lower chamber.

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"The real concern right now is the Democrats are exceptionally motivated to run a campaign against this president. And if that's the case, they may have some good opportunities in front of them in the 2018 cycle," Lewandowski said.

"If you look at the numbers, I think we've got 32 or 33 Republican members of Congress who have already announced they are not seeking reelection. The problem with that is the Democrats only have to take back 24 seats in the House in order to take over," he added.

"And if that happens, we've got a real problem."

Lewandowski, who helmed the Trump campaign from 2015 to just before the Republican National Convention in 2016, said that if Democrats retake the House, one of their first priorities will be to introduce articles of impeachment against the president.

"Their goal is to first and foremost stop the president’s agenda. And, I think, their secondary goal is to file articles of impeachment against this president, which are completely unfounded," he said.

Democratic leaders have yet to sign on to the impeachment effort, currently led by Reps. Steve Cohen Stephen (Steve) Ira CohenTennessee Rep. Steve Cohen wins Democratic primary Democrats exit briefing saying they fear elections under foreign threat Texas Democrat proposes legislation requiring masks in federal facilities MORE (D-Tenn.) and Al Green Alexander (Al) N. GreenThe Memo: Trump's race tactics fall flat Trump administration ending support for 7 Texas testing sites as coronavirus cases spike The Hill's Coronavirus Report: Miami mayor worries about suicide and domestic violence rise; Trump-governor debate intensifies MORE (D-Texas). But 58 Democrats voted in favor of an effort to launch impeachment proceedings against Trump last month.

Democrats have a massive 17-point lead on a generic ballot going into the 2018 midterms, according to a recent survey from Quinnipiac University.

Even so, that same poll found that a majority of Americans don't want Democrats to immediately begin impeachment proceedings if they retake the House.

Just over half of Americans, 51 percent, say Democrats should not begin impeachment proceedings if they win the House, while 45 percent say the party should move to impeach Trump if they win in November, according to the poll.