Gus R. Douglass (born February 22 1927) is an American politician who served for 44 years as Agriculture Commissioner of West Virginia having first been elected to that post in 1964. He is a member of the Democratic Party and the longest-serving Agriculture Commissioner in the history of the United States. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Office Holder