Moore was deputy county assessor in 1894, and a county auditor from 1895 to 1898. He moved to Idaho in 1899, where he taught school and worked in real estate. Moore co-founded the town of
Ashton, Idaho. Moore served in the
Idaho Legislature as a member of the Idaho State House of Representatives from 1903 to 1906. He was postmaster of Saint Anthony from 1908 to 1913. He was elected the
14th Lieutenant Governor of Idaho in 1918 and served in that capacity during the administration of Governor
D. W. Davis. In
1922, Moore was elected Governor of Idaho, defeating
Progressive H. F. Samuels and former
Democratic governor
Moses Alexander. Moore became the first person in Idaho history to successfully run for governor after serving as lieutenant governor. He was reelected in
1924, by defeating Samuels and Democrat
A. L. Freehafer. After leaving office, Moore returned to his real estate career. In 1929, he was appointed to as the
United States Commissioner of the General Land Office. ==Death==