Please answer the following question: Kirk W. Dillard is a Republican member of the Illinois State Senate representing the 24th District since 1994. He is former chairman of the DuPage County Republican Party. Dillard is a member of the American Legislative Exchange Council serving as Illinois state leader. 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?
Answer:
Office Holder