STOCKTON — Former Stockton City Councilman Elbert Holman announced today he is challenging incumbent Tom Patti for the District 3 seat on the San Joaquin County Board of Supervisors.TheHolman, who turned 70 on Monday, is a retired law-enforcement officer who served on the city council Check back later at recordnet.com and read Wednesday's edition of The Record for more on this story by Staff Writer Roger Phillips.