Berry moved to South Dakota in 1897. He homesteaded in Gregory County, moved to Todd County, and finally settled in
Mellette County south of Belvidere. He built up a 30,000 acre (120 km2) ranch raising Hereford cattle and saddle horses. Berry served in the House of Representatives of the
South Dakota Legislature from 1925 to 1931, and was a member of the Custer State Park Board. Elected governor twice, in 1932 and 1934, Berry assisted in South Dakota's recovery from the Great Depression. As Governor, he acted as Federal Relief Administrator and helped secure federal aid. He called the legislature into special session to legalize 3.2 percent beer and again to enact unemployment insurance. During his tenure, state property tax was abolished, replaced by gross income tax which was replaced by a state sales tax. Berry ran for a third term in 1936 but was defeated by
Leslie Jensen. In
1938, he defeated interim United States Senator
Herbert Hitchcock in the Democratic primary, but lost the general election to
Chan Gurney. In
1942, Berry defeated incumbent United States Senator
William J. Bulow in the Democratic primary but lost the general election to
Harlan J. Bushfield. That defeat ended his political career. From 1942 to 1947 he served as director of the Farm Credit Administration in
Omaha, Nebraska. In 1962, he was inducted into
Hall of Great Westerners of the
National Cowboy & Western Heritage Museum. ==Death==