After defeat, Massie opens door to a 2028 run. Which office is unclear.

He might not be done just yet.

Rep. Thomas Massie, President Donald Trump’s most prominent Republican critic in Congress, lost his primary last week in Kentucky to a challenger backed by the president. But Massie filed a statement of candidacy on Monday that will give him the ability to raise money for a potential run for office in 2028, according to Federal Election Commission records.

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“This allows me to raise funds to continue my political operations supporting my position as a current office holder and as a potential candidate for federal office,” Massie wrote in a social media post.

While the form lists the office being sought as “House,” Massie wrote: “I haven’t made a final decision about which office to seek, if I run.”

Massie, 55, the libertarian-leaning, raw-milk-drinking, MIT-educated engineer who was first elected to the U.S. House of Representatives in 2012, emerged as a thorn in Trump’s side during his second term. He was one of only two House Republicans to vote no on the president’s signature “big, beautiful bill,” he led the push for the release of the Jeffrey Epstein files, and he has been a vocal opponent of the war in Iran.

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On Sunday, on NBC’s “Meet the Press,” Massie was asked if he was considering a run for president in 2028. “I will not rule out anything, and right now I’m not going to rule in anything,” he told host Kristen Welker.

“I won’t rule out a run for county commissioner,” Massie added. “I used to be the county judge executive here. That was probably the best job I ever had in politics.”

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This article originally appeared in The New York Times.