minnehaha county
republicans board
Korry Petterson
Chairman
Korry has been active in Republican politics since high school, starting with Senator John Thune’s first congressional campaign. He served as an At-Large Member of the Minnehaha County Republican Board before being elected Chairman in 2025. A dedicated conservative, Korry is also a successful entrepreneur with businesses in eye care, software, and real estate. He and his wife Kim have two children—an engineer in NYC and a junior high student at O’Gorman, where Korry also coaches football. He enjoys hunting, fishing, and traveling with his family.
Marsha Symens
Vice Chair
Marsha, a dedicated community leader, has served on numerous boards and held various offices over the years. Marsha and her husband Kevin have been married for many wonderful years and are the proud parents of three children. Her passion for service and conservative values continues to guide her work in strengthening our local Republican presence.
Londa Grotting
Board Secretary
I’m a South Dakota native who believes in the power of roots—both at home and in my career. Beyond my professional life, I find great fulfillment in serving my community through volunteering with 4-H, my church, and the Republican Party.
When I’m not 'momming' for my six wonderful kids or running them to their various activities, I find my peace in the garden, riding horses, or getting lost in a good book. I’m a firm believer in the balance between a hard day's work and a quiet evening with the family.
John Small
Board Treasurer
John and his wife Heidi are the owners of Sunny 93.3 in Sioux Falls. They also host the morning show on the station. The John And Heidi Show is syndicated to over 300 additional radio stations from San Diego to New York and from Dallas to Canada. In addition to broadcasting and podcasting, John is also a stand up comedian, specializing in clean comedy shows for corporate events and fundraisers. The Smalls have two adult children who both live in the area. They also have two tiny dogs who think they run the neighborhood.
Cory Johnsen
At-Large Board Member
Cory Johnsen brings over 14 years of advertising and marketing experience in the Sioux Falls area. Originally from Aberdeen, SD, he attended St. Cloud State University, where he played football before moving to Sioux Falls in 2006 to join the Sioux Falls Storm. Over 10 seasons, Cory became the Storm’s all-time sack leader, won 8 National Championships, and earned a spot in both the IFL Hall of Fame and the Storm’s Ring of Honor.
At home, Cory enjoys the organized chaos of family life with his wife Nikki, their two kids—Marley (9) and Baker (7)—and their Sheepadoodle, Murray. In his free time, he’s often coaching Baker’s sports teams or cheering on Marley at Dakota Spirit cheerleading events.
Erich Piepho
At Large Board Member
Erich has been active in Republican politics since 2022, working on campaigns at every level, from local school board races to federal offices, helping Republicans secure victories in both safe and competitive districts. As the former Treasurer of the Minnesota Young Republicans, Erich demonstrated a strong commitment to advancing Republican values, a dedication he now continues in this state. He currently serves as a board member of the Young Republicans of South Dakota as well, where he holds the position of National Committeeman.
Erich is deeply dedicated to public service and active community involvement throughout the Sioux Falls region and the entire state of South Dakota.
Zach Mulder
At Large Board Member
Zach Mulder lives and works in Sioux Falls, where he serves as a mortgage professional helping individuals and families achieve homeownership. With experience spanning financial services and healthcare administration, he brings a practical, people-first approach to his work.
He is actively involved in his community and believes in supporting policies that strengthen families, encourage economic stability, and promote long-term growth.









