Virginia Lt. Gov. Justin Fairfax issued a forceful pre-dawn denial on Monday to an allegation of sexual assault that surfaced after 15 years, in the latest political bombshell to rock Richmond where Democratic Gov. Ralph Northam is battling resignation calls over a racist photo from his medical school yearbook. Fairfax, who would be next in line for governor should Northam bow to pressure and resign, called the allegation “defamatory” and “false.” “Lt. Governor Fairfax has an outstanding and well-earned reputation for treating people with dignity and respect,” the statement from his office read. “He has never assaulted anyone—ever—in any way,...