For example, in Planned Parenthood v. Casey, Judge Alito voted to uphold a state law that required women to notify their husbands before having an abortion. Justice O'Connor joined with a majority of the court in concluding otherwise. In addition, Judge Alito has been more willing to support state-sponsored religious displays than Justice O'Connor. And he has written several dissenting opinions on the Third Circuit Court of Appeals that, if accepted, would have made it more difficult for discrimination victims to prevail and recover damages
http://www.aclu.org/court/court.cfm?ID=19336&c=316