A rancher whose roots in the South Dakota soil were as deep as his commitment to its statehouse, Ralph 'Lars' Herseth died on September 12, 2026, at the age of 80. A former Minority Leader and gubernatorial nominee, he was the steady heartbeat of a political dynasty that shaped the state's history for nearly a century.

His stewardship of the law was defined by a partnership with Republican Governor Bill Janklow, a collaboration that prioritized the state's survival over partisan divides. During the 1980 rail line crisis, Herseth worked across the aisle to protect the agricultural transportation infrastructure essential to South Dakota farmers. This pragmatism was a hallmark of his twelve years in the House of Representatives and his subsequent eight years in the State Senate. As noted by The Mighty 790 KFGO, his approach to public life was to put solving problems for the people ahead of political differences. Peers like Barney Bruns remembered him as a good man and good friend who balanced his role as a Democratic leader with a deep respect for his opponents, including George S. Mickelson, to whom he narrowly lost the 1986 gubernatorial race.

The stewardship of the Herseth name passed to his daughter, Stephanie Herseth Sandlin, through a shared fascination with the machinery of government. Herseth recalled watching his daughter as a child, noting that she would sit for hours, well beyond what a normal attention span would be for any 7 or 8 year old, just fascinated by the political process. This early exposure to her father's work in Pierre eventually led her to serve as South Dakota's U.S. Representative from 2004 to 2011. For Herseth, politics was not merely a career but a family legacy to be tended with the same care as the crops in Houghton.

At home on the family ranch overlooking the Sand Lake National Wildlife Refuge, Herseth found a different kind of partnership with his wife, Diane Friedman Herseth. Over their 32 year marriage, they shared a passion for horses and the daily labor of managing a diverse operation of cattle, corn, soybeans, wheat, and alfalfa. According to the Spitzer-Miller Funeral Home, those who knew him remembered a man deeply rooted in this particular place, connecting him to the generations of Ralph E. and Lorna B. Herseth who came before him in stewarding the land. The land informed his lawmaking; the cattleman's necessity for reliable markets drove his legislative focus on agricultural policy.

In his later years, Herseth translated his ranching expertise into a broader mission as the President of the American Coalition for Ethanol. This role represented the modern evolution of his agricultural roots, as he advocated for home-grown, renewable fuel. Gary Duffy, president of the South Dakota Corn Growers Association, observed that Herseth was a leader in shaping policy that touted the importance of a strong national commitment to agriculture. His work earned him the Excellence in Agriculture Award, as documented by the South Dakota Corn Growers Association.

The capstone of his public life arrived with his induction into the South Dakota Hall of Fame, a recognition of a lifetime spent in service to the prairie. He remained a fixture of Brown County until the end, living at the home where his life began. Herseth leaves behind a state shaped by his bipartisan hand and a family that continues his tradition of public service. He is survived by his wife, Diane, and his daughter, Stephanie.

Lars Herseth will be remembered as a man who understood that the health of the statehouse was inextricably linked to the health of the soil. He navigated the complexities of the legislature with the same steady hand he used to manage his herd, proving that a leader could be both a fierce advocate for his party and a dedicated friend to his neighbors. His legacy is found in the rail lines that still carry grain across the plains and in the quiet example of a life lived in service to both the land and the law.