New York state GOP Chairman Ed Cox is leaving his post and will take a role with Trump Victory, a joint-fundraising effort by the Trump campaign and Republican National Committee (RNC), the campaign announced Monday.

“Ed Cox has been invaluable as Chairman of the New York State Republican Party, and I’m thrilled that he is joining our finance team to help re-elect President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE," Todd Ricketts, the finance chairman of Trump Victory, said in a statement.

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Trump's 2020 campaign manager, Brad Parscale Bradley (Brad) James ParscaleMORE, praised Cox for his work as the state Republican Party chairman for nearly a decade.

The role with Trump's reelection effort provides a soft landing spot for Cox. The longtime state leader was challenged earlier this year by Erie County GOP Chairman Nick Langworthy, who will transition into the role.

A New York state GOP spokeswoman said Cox will serve out the remainder of his term, which concludes in early July.

"Ensuring President Trump is reelected is the most critical task at hand and I'm honored to take on the important role of helping deliver the resources he needs for a huge victory next year," Cox said in a statement.

"Serving as Chairman of the NYGOP over the last ten years has been one of the most rewarding chapters of my life, and I will continue to actively help elect more Republicans here in New York," he added.

Cox was slow to back Trump during the 2016 campaign, even as several county chairs had done so. Cox eventually offered his endorsement after Trump handily won the New York state primary.

Republicans faced a difficult election cycle in New York in 2018, losing multiple statewide races and seeing three congressional districts flip to Democrats.

Updated at 2:53 p.m.