Greg Jamison is an American politician. He has served as a Republican member for the 12th district in the South Dakota House of Representatives since 2021.
Jamison was a candidate in the 2014, 2018 and 2026 Sioux Falls mayoral races. He lost all these campaigns.
On January 7, 2026, Jamison announced his candidacy for Mayor of Sioux Falls. Jamison ultimately secured 18% of the votes in the primary election and failed to advance to the runoff. After being eliminated, he endorsed Jamie Smith for mayor, who ultimately lost the election to Republican Christine Erickson. In his announcement, Jamison said he supported law enforcement initiatives like Operation Prairie Thunder. He also stated his intention to support tax "reform, rather than relief" during the 2026 South Dakota legislative session.
Previously, he complemented his mayoral opponent, State Senator Jamie Smith as a "good guy, likable, [and] easy to work with." During the 2026 legislative session, Jamison sponsored a bill that would allow municipalities to create new sales taxes.
Election history
2020 Jamison was elected with 6,799 votes; Rep. Arch Beal was also re-elected with 5,621 votes and Erin Royer received 5,555 votes.
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