Just days before Tuesday’s election in the tight race for San Diego’s 52nd Congressional District seat, a second former staffer for Republican candidate Carl DeMaio is accusing him of sexual harassment. Navy veteran Justin Harper, 25, said he began interning with DeMaio’s campaign in February and was hired as a regional political director a month later. His job was to make phone calls and knock on doors to ask voters for their support. Harper said he quit on July 12, two days after an incident involving DeMaio in a restroom at campaign headquarters.