John Gioia (pronounced: JOY-uh or) is a democratic county supervisor for Contra Costa County, California District 1 since 1998 and reelected in 2002.
John Gioia (pronounced: JOY-uh or) is an American politician. He has been the Democrat county supervisor for Contra Costa County, California District 1 since 1998 and was re-elected in 2002.