U.S. Rep. Dusty Johnson holds the strongest position in South Dakota’s Republican gubernatorial primary due to his consistent polling lead and superior name recognition entering the June 2 contest. The latest Mason-Dixon survey of likely Republican voters shows Johnson at 34 percent, ahead of state House Speaker Jon Hansen at 18 percent and incumbent Gov. Larry Rhoden and businessman Toby Doeden tied at 17 percent. Johnson’s congressional tenure and fundraising edge have driven this separation, while a series of April debates highlighted differences on education funding, school choice, and rural healthcare without shifting the frontrunner. Traders view these trends as evidence that Johnson is most likely to secure the nomination outright or advance comfortably to any runoff.