South Dakota Governor Larry Rhoden Faces Tightening Republican Primary Race
South Dakota Governor Larry Rhoden is entering a critical phase of his bid for re-election as the Republican primary for governor approaches on June 2, 2026. The race has evolved into a high-stakes contest featuring a mix of established state leadership and federal representation, with U.S. Representative Dusty Johnson emerging as a formidable challenger.
The Path to the Governor’s Office
Larry Rhoden’s tenure as governor began under unique circumstances. After serving as lieutenant governor under Kristi Noem, Rhoden ascended to the governorship in January 2025. This transition occurred after the U.S. Senate confirmed former Governor Noem as the Secretary of Homeland Security in the second administration of Donald Trump.
As a lifelong West River rancher, Rhoden has positioned himself as a proven leader with a record of service to the state. However, his short time in the top office has not shielded him from a crowded field of challengers within his own party.
The Primary Field and Polling Trends
The Republican primary on June 2 features four primary contenders:
- Larry Rhoden: The incumbent governor.
- Dusty Johnson: U.S. Representative for South Dakota’s At-Large Congressional District.
- Jon Hansen: State House Speaker.
- Toby Doeden: Republican candidate.
Recent data suggests a shift in momentum toward the federal representative. A poll conducted by Mason-Dixon Polling & Strategy and commissioned by South Dakota News Watch and the Chiesman Center for Democracy indicates that Dusty Johnson has grown his lead in the race. According to the poll released in late April 2026, Johnson holds 34% support, while State House Speaker Jon Hansen follows at 18%.
Election Rules and the Runoff Possibility
South Dakota’s primary rules add a layer of complexity to the race. If no single candidate secures at least 35% of the total vote on June 2, the top two vote-getters will be forced into a runoff election. That runoff is currently scheduled for July 28, 2026.
With Johnson hovering right at the 34% mark in recent polling, the possibility of a runoff remains high, meaning the candidates must continue to aggressively court undecided voters through May.
Key Takeaways for Voters
- Primary Date: June 2, 2026
- Runoff Date (if necessary): July 28, 2026
- Threshold for Victory: 35% of the vote to avoid a runoff
- Frontrunner: Rep. Dusty Johnson (34% in recent polling)
- Incumbent: Gov. Larry Rhoden
Looking Ahead
The coming weeks will likely spot an intensification of campaign activity as Rhoden attempts to leverage his incumbency and Johnson seeks to capitalize on his growing momentum. The outcome of this primary will determine who leads the Republican ticket in the general election, shaping the political direction of South Dakota for the next term.