L-R, Ammar Campa-Najjar, Jim Desmond, Brandon Riker and Marni von Wilpert. (by Times of San Diego from images courtesy of the campaigns or offices) Democrats running in California’s 48th District Congressional race jumped into the field with the aim of unseating high-profile Republican incumbent Rep. Darrell Issa. At the last minute, he dropped out of the race last month and left a wide-open field that suddenly needed to recalibrate its strategy.