Please answer the following question: William Sesler - William G. Sesler (born April 18 1928) is a former Democratic member of the Pennsylvania State Senate serving from 1961 to 1972. He was an unsuccessful candidate in the 1970 United States Senate election in Pennsylvania against Hugh Scott. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Office Holder