I remain very skeptical about that claim.
Women have been the deciding factor in most recent presidential elections. Women instinctively dislike and distrust men like Rudy who have ditched wives and had numerous extra-marital affairs, not to mention his close association and living arrangements with homosexual men. Rudy may attract some pro-abort but otherwise conservative women away from Hillary, but IMHO he will drive many more women into the Hillary camp than he will attract to his own. Just MHO and worth just what it costs.