Sen. Mike Braun, an Indiana Republican, has formed a campaign to run for governor in 2024, according to paperwork filed Tuesday.
The development, first reported by Politico, had been expected for months, with Braun hinting hard that he was interested in the race.
The state's other GOP senator, Todd Young, was re-elected by a convincing margin this month.
In a statement Wednesday morning, Indiana Democratic Party Chair Mike Schmuhl greeted Braun's candidacy with derision.
"As a so-called businessman, Mike Braun has done very little to improve Indiana as a U.S. senator and he surely won’t do it as governor," Schmuhl said.