A native of Iowa, Bushfield was raised in Miller, South Dakota. He attended Dakota Wesleyan University, graduated from the University of Minnesota Law School, and became an attorney in Miller. A Republican, he served as State's Attorney of Hand County (1906-1910), and as Miller's city attorney. After unsuccessful campaigns for South Dakota Attorney General (1913, 1918), and the state Supreme Court (1930), Bushfield became chairman of the South Dakota Republican Party in 1935. He served until 1938, when he received the party's nomination for governor. Bushfield won the governorship in 1938, and was reelected in 1940. A fiscal conservative, his term as governor was concentrated on responding to the lingering effects of the Great Depression, which included reductions in the number of state employees and the state budget, as well as elimination or reduction of several state taxes.