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President-elect Trump threw his full support behind House Speaker Mike Johnson, R-La., to lead the House again during a closed-door meeting with GOP lawmakers on Wednesday.

Trump told current and incoming members that he backed Johnson "100%" hours before Republicans are set to elect their leaders for the 119th Congress, sources said. Johnson was not facing any significant challenges, but a group of conservative members are threatening to slow the process down by demanding a recorded vote rather than unanimous consent for the speaker.

One member of the hardline-right House Freedom Caucus told Fox News Digital that Trump's strong support for Johnson will likely negate any significant opposition the Louisiana Republican was facing.

President-elect Trump arrives to speak during an election night event at the Palm Beach Convention Center in West Palm Beach, Florida, on Nov. 6.

President-elect Trump arrives to speak during an election night event at the Palm Beach Convention Center in West Palm Beach, Florida, on Nov. 6. (Chip Somodevilla/Getty Images)

Trump told Johnson, Majority Leader Steve Scalise, R-La., and Majority Whip Tom Emmer, R-Minn., to "stick together" in the next congressional term, two sources said.

Sources said Trump also promised to "carry out the largest deportation operation in history," sources said, which earned cheers from House Republicans.

He also gave shoutouts to Elon Musk, who was in the room with him, as well as his incoming chief of staff Susie Wiles and House GOP Conference Chair Elise Stefanik, R-N.Y., who he tapped to be his new U.N. ambassador, sources said. 

Speaker Johnson and Donald Trump

House Speaker Mike Johnson, R-La., left, and President-elect Trump. (Getty Images)

Trump also predicted the GOP could win liberal states like California and New York in the next election — and mused about running a fourth time. 

"I suspect I won't be running again unless you do something else, unless you say he's so good we've got to figure something out," he joked to a gathering of House Republicans ahead of their closed-door leadership elections in Washington, D.C., on Wednesday. 

"It's nice to win. It's always nice to win. A lot of good friends in this room. So, you know, we had, like, historic kind of numbers, especially for the president," Trump said. "But the House did very well, and I think we're responsible for helping you."

President-elect Trump on Wednesday predicted the GOP could win liberal states like California and New York in the next election — and mused about running a fourth time.

President-elect Trump on Wednesday predicted the GOP could win liberal states like California and New York in the next election — and mused about running a fourth time. (AP/Evan Vucci)

REPUBLICANS 2 SEATS AWAY FROM HOUSE MAJORITY, GIVING TRUMP LEEWAY TO IMPLEMENT AGENDA

Trump’s appearance came as lawmakers returned to Washington for a lame duck session before the next term. Republicans are poised to keep their narrow majority in the House and have won control of the Senate, granting them far greater ease next term at getting conservative legislation to the president’s desk.

Trump went on: "We won, which is great because Republicans aren't supposed to be winning the majority." 

Tom Emmer, Steve Scalise, Mike Johnson

From left: House Majority Whip Tom Emmer, R-Minn.; House Speaker Mike Johnson, R-La.; and Majority Leader Steve Scalise, R-La., are running for their same roles to lead the next Congress. (Getty Images)

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"We won it every way — all seven swing states by a lot … New Jersey is right, just a few points. It's got them very worried because they said, well, next time if we go up even a fraction of what we went up, you're going to win New York, you're going to win New Jersey, you're going to win places that weren't winnable. California, too," he said.