Billionaire Elon Musk donated $10 million last week to a super PAC affiliated with Republican Kentucky Senate candidate Nate Morris, who is part of a competitive field running to replace retiring Sen. Mitch McConnell (R-Ky.), Axios reported Monday.

The contribution to Fight for Kentucky marks the most Musk has donated to a single Senate candidate. The world’s richest person donated at least $250 million to President Trump’s 2024 campaign.

The Hill has reached out to the Fight for Kentucky PAC for comment.

Morris, 45, declared his candidacy to succeed McConnell on Donald Trump Jr.’s podcast last June. At the time, Morris touted his business credentials and outsider status and said he would “finally give this seat back to the people” if elected.

The George Washington University graduate founded waste management company Rubicon Technologies and is the CEO of Morris Industries, a holding company.

Morris also slammed Rep. Andy Barr (R-Ky.) and Kentucky Attorney General Daniel Cameron (R), two other GOP Senate candidates, as “McConnell-ites.”

“This race is going to be very, very simple: it’s a referendum on Mitch McConnell’s record. It’s a referendum on Mitch McConnell’s legacy,” he added.

Musk, who ran the Department of Government Efficiency for just more than four months last year, had a falling-out with Trump — in part over the GOP-backed tax and budget legislation the president signed into law last July.

But the two sat together at the funeral for conservative activist Charlie Kirk in September, and Musk attended a November black-tie dinner at the White House in honor of Saudi Crown Prince Mohammed bin Salman.

Musk reportedly had dinner with Vice President Vance and White House chief of staff Susie Wiles in November, and has told Republican operatives he plans to open up his enormous checkbook for the midterms.

Axios reported in December that he made sizable donations to the GOP’s House and Senate campaign efforts.

Through the third quarter of last year, Morris loaned more than $3 million to his campaign committee, Morris for Senate, and received more than $1 million in contributions, according to filings with the Federal Election Commission.