Life long resident of the Glyndon, Minnesota area, Keith Langseth and his wife Lorraine operate a dairy farm in Elkton Township between Glyndon and Barnesville.
Langseth, who had served as Clay County DFL Chairman, was elected to the Minnesota State Legislative in 1974 when he unseated Arlan Stangeland. He continued to serve District 9B until 1978 when he failed in his re-election by eleven voters, one of the closest races in the state of Minnesota.
In 1980, Langseth ran for the State Senate District 9, which was held by Senator Douglas Sillers, and won. Langseth has served on the Education Committee, the Finance Committee, and chaired the Transportation Committee. He also served on the Interstate Cooperation Committee and the subcommittee of Education Operation and Governance. Langseth retired from the Senate in 2012.
The Keith Langseth Papers are a legislative collection. The papers include bills, Clay County DFL material, committee files, correspondence, newspaper clippings, press releases, reports, studies, and photographs. The material is arranged in alphabetical order by subject, and chronologically within the subject.