Holt was elected to the Montana House of Representatives in 1912, and served one term. He was a member of the Montana State Senate from 1933 to 1935, and was chosen as president pro tempore in 1935. He became governor upon the death of Governor Frank Henry Cooney on December 15, 1935.[4] Holt was defeated for reelection in 1936. He served as the delegate to Democratic National Convention from Montana in 1936.[5]
Holt retired from political life, and later served as a land agent for Northern Pacific Railroad in Seattle, Washington.[6]
Death
Holt died on March 1, 1945, in Seattle, Washington, where he was with the Northern Pacific Land Office.[7]
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