Kayleigh McEnany is leaving President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE's reelection campaign to serve as the new White House press secretary, two sources confirmed on Tuesday.

The former Republican National Committee spokeswoman and the current spokeswoman for the Trump campaign will take over for outgoing press secretary Stephanie Grisham Stephanie GrishamIvana Trump on Melania as first lady: 'She's very quiet, and she really doesn't go to too many places' The Hill's 12:30 Report: Trump uses White House as campaign backdrop Coronavirus tests not required for all Melania Trump speech attendees: report MORE.

McEnany, 31, has long been a fierce defender of the president in television interviews and through the campaign. She was a frequent presence on the campaign trail, appearing at Trump rallies and participating in events for the group Women for Trump.

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A formal announcement is expected later Tuesday.

The New York Times first reported the news.

The addition of McEnany is part of a broader overhaul of the White House press shop under new chief of staff Mark Meadows Mark Randall MeadowsTrump won't attend UN General Assembly in person, Meadows says McConnell focuses on confirming judicial nominees with COVID-19 talks stalled Overnight Health Care: Ex-Pence aide backs Biden over virus response | Trump's sharp words put CDC director on hot seat | Trump coronavirus adviser threatens to sue Stanford researchers MORE. The changes come at a critical moment for the administration as it works to combat the coronavirus pandemic. Her arrival also underscores the increasing focus on the president's reelection as one of his top campaign surrogates becomes the face of the White House press shop.

Alyssa Farah is expected to join the West Wing as director of strategic communications, according to one of the two sources who confirmed the shakeup. Farah is currently the Pentagon press secretary and previously served as spokeswoman for Vice President Pence and the House Freedom Caucus.

Ben Williamson, who served as Meadows's chief of staff on Capitol Hill, will become a senior communications adviser in the White House.

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McEnany will be the fourth press secretary of the Trump administration. She follows Grisham, Sarah Huckabee Sarah Elizabeth SandersSarah Sanders on Trump's reported war dead criticism: 'Those comments didn't happen' Sarah Sanders memoir reportedly says Trump joked she should hook up with Kim Jong Un McEnany stamps her brand on White House press operation MORE Sanders and Sean Spicer Sean Michael SpicerKellyanne Conway to leave White House at end of month Pro-Trump duo Diamond and Silk launch new program on Newsmax TV The Hill's 12:30 Report - Presented by Facebook - Supreme Court's unanimous decision on the Electoral College MORE. Both Grisham and Spicer lasted less than a year in the job.

The role of press secretary has been difficult for McEnany's predecessors, as Trump has long been viewed as his own spokesman. He has commandeered the daily coronavirus task force briefings in recent weeks, often taking questions from and sparring with reporters for up to two hours each evening.

The White House announced earlier Tuesday that Grisham would depart as press secretary to return to the East Wing as the first lady's chief of staff and spokeswoman.

Grisham’s legacy as press secretary is largely defined by her lack of visibility. She did not hold a single press briefing, nor did she engage in gaggles with reporters on camera, something deputy press secretary Hogan Gidley, White House counselor Kellyanne Conway Kellyanne Elizabeth ConwayGeorge Conway hits Trump on 9/11 anniversary: 'The greatest threat to the safety and security of Americans' Juan Williams: Swamp creature at the White House Oversight Democrats press for probe into possible Hatch Act violations MORE and top economic adviser Larry Kudlow Larry KudlowMORE do regularly.

The outgoing press secretary did appear frequently on Fox News programs, where she was occasionally asked about the lack of briefings. She attributed the decision to Trump’s accessibility and her belief that reporters used the briefings as “theatre” to boost their profiles.

Olivia Beavers contributed to this report, which was updated at 12:38 p.m.