Please answer the following question: Manuel Bartlett -  Manuel Bartlett Díaz (born 1936 in Puebla de Zaragoza Puebla) was Mexican Secretary of the Interior Elected Senator for a 2000 - 2006 term he became one of the most iron defenders of the state property on the power resources. On May 27 2006 Manuel Bartlett declared that in view of the low possibility of PRI candidate to the Presidency Roberto Madrazo winning and he would vote for Andrés Manuel López Obrador to avoid a right-wing victory. 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?
Answer:
Office Holder