Lionel D. Ruiz is the first Hispanic to be elected to the Board of Supervisors in Pinal County. He is a lifelong, resident of Pinal County, a 41 year resident of Dudleyville. Supervisor Ruiz is a Democrat and has served as Precinct Committeeman for Precinct #4. He has served on the Advisory Committee for the Central Arizona College and the Board of Directors for the Hayden Federal Credit Union. Committee involvement includes the Pinal County Board of Health, Pinal County Juvenile Justice Committee, Pinal County Jail Advisory Committee, National Association of Latino Elected Officials, Rail Transportation Committee, 25 year member of the Board of Trustees Ray Unified School District, Chairman of the Central Arizona Association of Governments, and Northwest Water Alliance Committee.

Mr. Ruiz is a graduate of Ray High School and of Central Arizona College. He is also a four-year veteran of the United States Air Force. Supervisor Ruiz is retired from ASARCO Mining Company where he worked for 38 years as an accountant. He and his wife, Aida Ruiz, have been married 45 years. They have four grown children: Lionel Jr., Joseph, Sarah, and Stephanie, and are blessed with seven grandchildren.