"I'm not here to scare anyone off," Mr. Wood said, in the same interview when he warned new accusers to "think twice," adding, "I've been brought in to bring an element of fairness to the accusations being brought."

Mr. Wood has a national reputation as an aggressive advocate, having represented the family of JonBenet Ramsey and the N.B.A. star Kobe Bryant in his sexual assault case in 2004, which was settled.

Ms. Allred, who represents Ms. Bialek and has her own national reputation for representing women in high-profile sexual harassment cases, said she had prepared her client for criticism, but accused the Cain campaign of taking a "scorched-earth" approach.

"He's got millions of dollars to spend on investigators, high priced attorneys, P.R. people, political operatives, you name it, he can spend it to get what he needs to basically get the high-priced weapons of war ready and aimed at our clients," Ms. Allred said. "The women we represent don't have those kinds of resources, and that makes their willingness to speak out all the more heroic."