John Gioia

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John Gioia
Portrait of John Gioia
Nationality	American
Alma mater	UC Berkeley School of Law
Occupation	County Supervisor
Years active	1998 to Present

John Gioia is an American politician. He has served on the Contra Costa County Board of Supervisors in Contra Costa County, California since 1998 and was re-elected three times. He served as chair in 2002, 2006 and 2010. John Gioia is a Democrat. Contra Costa supervisorial seats are non-partisan.