Arizona Sheriff Mark Lamb Announces Senate Run

Mark Lamb, a right-wing sheriff and ally of former President Donald J. Trump, has announced his candidacy for the Senate seat currently held by Kyrsten Sinema, an independent. Lamb is the first high-profile Republican to compete for the seat, which could determine control of the closely divided chamber. Sinema has not yet announced whether she will run, but if she does, there is already one Democratic challenger: Representative Ruben Gallego. Lamb has made headlines for his defiance of pandemic lockdowns, support for private militias, and hard-line positions on immigration.