sentences:  He was Assistant Secretary of the Department of the Interior from October 1955 to July 1956.From August 1956 to October 1958 he was a special representative for the Secretary of Agriculture.When incumbent Governor J. Hugo Aronson declined to seek reelection as Governor of Montana in 1960, D'Ewart ran to succeed him, and lost to former State Senator Donald Grant Nutter in the Republican primary by fewer than five hundred votes.