One thing I think these spokespeople and surrogates are not taking into consideration when they try to dismiss individual claims as false, is that the dozen or so claims so far don't all need to be true to sink him, all that needs to be true is one claim and one instance, because he stated at the debate that he never did it even once.
The likelihood of at least one (if not most) of these accusations being entirely true is extremely high given his history and what he admitted on the tape, and on the Stern shows.