Democratic Rep. Eric Swalwell announced this week that he’s leaving Congress and the crowded contest for California governor following sexual assault allegations, which he denies, and a swift exodus of his supporters . Days ago, the 45-year-old congressman was among a group of leading Democrats in the race to replace Gov. Gavin Newsom , who cannot seek a third term at the helm of the nation’s most populous state. Swalwell’s campaign unraveled within about 48 hours after the San Francisco