House GOP Conference Chairwoman Elise Stefanik, R-N.Y., is in contention for a role in the new Trump administration, Fox News Digital is told.

Stefanik became the first congressional leader to back President-elect Trump’s third White House campaign when she endorsed him in November 2022.

She is now being discussed as a potential candidate for U.S. ambassador to the United Nations, two people familiar with such discussions told Fox News Digital.

One said Stefanik was "high on the list" of potential candidates.

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Elise Stefanik speaking at lectern with Trump behind her

House GOP Conference Chair Elise Stefanik, R-N.Y., was one of President-elect Trump's earliest Congressional supporters. (Getty Images)

However, for Stefanik and other House lawmakers in contention for Trump administration roles, their chances will depend heavily on where the majority falls in their chamber.

Republicans are bullish about keeping the House majority after victories in the Senate and the White House on election night. However, the outcome will likely come down to a handful of close races in California, Arizona, Alaska and Oregon — and both sides anticipate the margin being close.

Replacing a House member, even one from a district that heavily favors one party or the other, generally takes at least several weeks. Additionally, Republican leaders have already signaled they would not want to waste any time in using their majorities in Congress to forward Trump’s agenda.

It is not immediately clear who else is in contention for the U.N. ambassador role.

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Nikki Haley closeup shot

The U.N. ambassador role was previously held by Nikki Haley. (Daniel Ceng/Anadolu via Getty Images)

Stefanik would have familiarity with foreign affairs as a senior member of the House Permanent Select Committee on Intelligence and the House Armed Services Committee.

The New York Republican has been a vocal supporter of Israel since the Oct. 7 terror attack by Hamas. She is also one of Trump’s closest allies in Congress, having headlined multiple "Women for Trump" rallies and other events for him on the campaign trail.

Stefanik announced to House colleagues on Thursday that she is running for her current leadership role as chair of the House GOP conference again.

Stefanik’s office did not return a request for comment from Fox News Digital.

Notably, one of Trump’s prior U.N. ambassadors was Nikki Haley, who challenged the president-elect for the 2024 Republican nomination before dropping out and eventually endorsing him.

Fox News Digital was also told that another House member, retired Green Beret Rep. Mike Waltz, R-Fla., is in consideration for a Trump administration role. Waltz is being looked at as a potential candidate for defense secretary, though Trump is also considering options from the private sector and others, Fox News Digital was told.

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Mike Waltz, R-Fla., in a committee hearing

Fox News Digital is told Rep. Mike Waltz, R-Fla., is also being considered for a role. (Mandel Ngan)

In addition to serving in the military before coming to Congress, Waltz was an adviser to Defense Secretaries Robert Gates and Donald Rumsfeld and spent time in the private sector as CEO of defense contractor Metis Solutions.

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He is currently on the House Armed Services and Intelligence committees with Stefanik, in addition to the House Foreign Affairs Committee.

Waltz’s office did not respond to an email requesting comment.

Trump-Vance transition spokeswoman Karoline Leavitt told Fox News Digital when asked for comment about the possible appointments, "President-Elect Trump will begin making decisions on who will serve in his second Administration soon. Those decisions will be announced when they are made."