The timing has to do with the Washington Post seeking out the story. According to them, Leigh Corfman was reluctant to tell her story. At this point, unless Moore confesses, the only proof to be had is the word of Corfman and the witnesses who say she told them years ago about what happened.It is not unusual at all for people who have experienced something like what was alleged to have happened to wait a long time to come forward with it. It is indeed a political problem for Moore, but just because his opponents might be advantaged by a scandal, that doesn't mean that this is some sort of vast rino-winged conspiracy.