Former Douglas County Commissioner David E. Nelson was killed in a Beaumont, Calif., traffic mishap on Saturday night, according to a report issued on Sunday by the Riverside County Coroner’s Office. Nelson, 81, was a pedestrian struck by a vehicle in the road in front of his granddaughter’s home around 7:31 p.m., the Beaumont Police Department confirmed on Wednesday. Nelson served as a county commissioner from 2017-2020, narrowly being defeated…