Dusty Johnson leads the South Dakota Republican gubernatorial primary as the front-runner due to his strong name recognition from seven years in Congress, superior fundraising, and a growing edge in recent polling. The latest Mason-Dixon survey from mid-April showed him at 34 percent among registered Republicans, ahead of House Speaker Jon Hansen at 18 percent and tied support near 17 percent each for incumbent Governor Larry Rhoden and businessman Toby Doeden, with 14 percent undecided. Johnson’s momentum has positioned him close to the 35 percent threshold that would avoid a runoff on June 2, while the field remains fragmented among the other contenders with no major late shifts reported.