Please answer the following question: John A. Cosgrove (born June 7 1954) is an American politician. On August 16 2013 he was sworn in as a member of the Senate of Virginia representing the 14th district after winning an August 6 special election to replace the retiring Harry Blevins.From 2002 to 2013 Cosgrove served in the Virginia House of Delegates representing the 78th district in the city of Chesapeake. 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