Dusty Johnson is the chairman of the Main Street Caucus. His at-large seat, which will be left vacant, is rated "solid Republican."

South Dakota’s lone member of the U.S. House of Representatives is seeking to trade in his Washington, D.C. office for the governor’s office in Pierre.

Rep. Dusty Johnson (R-SD) could face a strong primary challenger in the 2026 midterm elections from his home state’s attorney general. South Dakota’s at-large congressional seat has been held by Johnson since 2019.

Republican Rep. Dusty Johnson, South Dakota’s sole member of the House, announced he’s running for governor in 2026.