Arizona Republican Kari Lake will be announcing sometime shortly that she’s running for U.S. Senate.

Lake, a staunch supporter of former President Donald Trump, has been hinting at a run for months. She’s been active in national politics since her loss in the 2022 Arizona gubernatorial race, and she’s headlining events in Iowa and Michigan this week.

“Her interest has largely frozen the GOP field for the seat, which is currently held by Sen. Kyrsten Sinema (I-Ariz.). Blake Masters, the state’s 2022 Senate nominee, appears to be lingering on the sidelines after preparing to enter the race in September,” Politico reported.