A political figure long-known to residents in San Francisco’s North Beach, Aaron Peskin has served on the Board of Supervisors two times, first from 2001 to 2009 and again after being re-elected in 2015.He says his own personal struggles with addiction make him the right person to lead a city battling the same problem.To know San Francisco city supervisor and mayoral candidate Aaron Peskin is to understand his love of the water. ”No matter how stressful it is, or what’s on the board of supervisors agenda, or what crazy meetings you have, or what unexpected insanity is going to happen in…