LA Council President Herb Wesson says he is seeking to replace outgoing board member Mark Ridley-Thomas in 2020.LOS ANGELES (KABC) -- Los Angeles Council President Herb Wesson announced he is launching a bid for a seat on the County Board of Supervisors in 2020.Wesson made the announcement at a fundraiser Monday. He is looking to replace Mark Ridley-Thomas, who is vacating his seat due to term limits.The district Wesson wants to lead stretches from Carson to Culver City and is home to two million people. Report a correction or typo