Ohio Gov. John Kasich has secured the support of Home Depot co-founder Ken Langone, a megadonor who previously backed New Jersey Gov. Chris Christie.

Kasich's campaign announced that it had brought over Langone on Thursday.

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Langone, a brash and outspoken moderate Republican who brings his own network of like-minded donors, has an estimated net worth of $2.8 billion, according to Forbes.

Langone was one of the highest-profile Christie backers in the 2016 cycle. But he's also said positive things about former Florida Gov. Jeb Bush, one of Kasich's main establishment-lane rivals in the primary.

In a 2014 interview with Fox News' Neil Cavuto, Langone said, "If we get people of the caliber of Jeb Bush and Mitt Romney and Ben Carson and Chris Christie, I have complete confidence that the debates will be all about issues, that there won't be personal attacks."

In the first half of 2015, Langone gave $250,000 to the pro-Christie super PAC America Leads. “Would I write a check for $10 million? No, no I wouldn’t. But I do something better than that,” he said last year in an interview with National Journal. “I go out and get a lot of people to write checks, and get them to get people to write checks, and hopefully result in a helluva lot more than $10 million.

“I’m relentless. I’m not going to stop. I put a mirror under your nose. If I see mist, I ask you for money. If there’s nothing there, I’m talking to a stiff.”

Langone's backing could help keep Kasich afloat at a crucial time in his campaign: In the fourth quarter of 2015, the Ohio governor reported raising $3.2 million and had just $2.5 million cash on hand.

Kasich, like Christie, has been running in the establishment lane in the Republican primary and also devoted most of his campaign efforts to a strong showing in the New Hampshire Republican primary. Kasich ended up in second place behind Donald Trump, while Christie placed a disappointing sixth.

Christie suspended his campaign the next day.