Lizza, who is a fine mainstream liberal reporter (he even was occasionally slightly subversive about Obama, which makes him practically H.L. Mencken compared to his peers), has only one accuser and the accusation hasn’t been disclosed. He strongly denies he did anything wrong.
There used to be the concept that a “pattern” of sexual harassment was necessary to keep this kind of thing from being just a He Said / She Said standoff. But now everybody knows that She Said trumps He Said.