Background
His father, Swen Swenson, (1836–1905) was a Minnesota State Representative.
His father, Swen Swenson, (1836–1905) was a Minnesota State Representative.
Oscar Swenson attended New Sweden Township Rural Schools, Luther Academy, Albert Lea, Minnesota and Gustavus Adolphus College Oscar Swenson was elected to the House in 1912.
He served two decades in the Minnesota House of Representatives, and another 14 years in the Minnesota Senate. Swenson born in New Sweden Township, Minnesota to Norwegian immigrant parents. He caucused with the Conservative Caucus in the then-nonpartisan body, and was selected as speaker in 1931, a position he held for two years.
Swenson left the House in 1933, but returned to the legislature after being elected to the Senate in 1936.
He held that seat until 1951, serving as chair of the Senate agriculture committee. Swenson died in 1951 in Saint Paul, Minnesota.
He died due to complications from a cerebral hemorrhage at Miller Hospital in Saint Paul, Minnesota. The collection consisting of papers belonging to Swenson are contained in Memorial Library, Southern Minnesota Historical Center at the Minnesota State University, in Mankato, Minnesota.