April 7, 1959
Special Election to fill the vacancy created by the resignation of State Senator Harold T. Johnson (SD-07). Johnson resigned after being elected to Congress.
|Weston W. "Wally" Brunker||Republican||41%||Loss|
|Ronald G. Cameron||Democratic||44.3%||Win|
|R. C. Dunlap||Democratic||3%||Loss|
|Harold R. Rubin||Democratic||6.8%||Loss|
|Gerald B. Wallace||Democratic||1.4%||Loss|