2018 South Dakota elections

The 2018 South Dakota elections were held on November 6, 2018. All of South Dakota's executive officers were up for election as well as South Dakota's at-large seat in the United States House of Representatives.

United States House of Representatives
Incumbent Republican U.S. Representative Kristi Noem did not run for re-election and instead ran for governor. Republican Dusty Johnson won the general election.

Governor and Lieutenant Governor
Incumbent Republican governor Dennis Daugaard was term-limited and could not seek a third consecutive term. Republican Kristi Noem narrowly won the general election

Attorney general
Incumbent Republican attorney general Marty Jackley was term-limited and could not run for a third term. Jackley unsuccessfully ran for governor. Republican Jason Ravnsborg won becoming the next attorney general.

Republican primary
Lawrence County State's Attorney John Fitzgerald, Chief Deputy Attorney General Charlie McGuigan, and attorney and 2014 U.S. Senate candidate Jason Ravnsborg ran for the Republican nomination and won.

Democratic primary
Former U.S. Attorney for the District of South Dakota, Randy Seiler won the nomination at the South Dakota Democratic Convention.

Secretary of State
Incumbent Republican Secretary of State Shantel Krebs did not run for re-election and instead unsuccessfully ran for Congress. Governing magazine projected the race as "safe Republican". Steve Barnett ran for the Republican nomination and won. He easily won the general election.

State Treasurer
Incumbent Republican State Treasurer Rich Sattgast was term-limited and could not run for a third term. Josh Haeder, Northeast Director for Senator Mike Rounds, ran for the Republican nomination and won. He easily won the general election.

State Auditor
Incumbent Republican state auditor Steve Barnett was term-limited and could not run for a third term. Republican Rich Sattgast won the general election.