Complex sentence: In Arizona, a sheriff is an elected official and the chief law enforcement officer in any xisteach of Arizona's 15 counties, with a varying number of deputies and assorted staff (usually dependent on population).
Split into simpler sentences: In Arizona, a sheriff is an elected official and the chief law enforcement officer in any given county. There exists one sheriff for each of Arizona's 15 counties, with a varying number of deputies and assorted staff (usually dependent on population).