Original sentence: The current associate justices are (in order of seniority): John Paul Stevens, Antonin Scalia, Anthony Kennedy, Clarence Thomas, Ruth Bader Ginsburg, Stephen Breyer, Samuel Alito and Sonia Sotomayor
Edited sentence: The current associate justices are (in order of seniority): John Paul Stevens, Antonin Scalia, Anthony Kennedy, Clarence Thomas, Ruth Bader Ginsburg, Stephen Breyer, Samuel Alito and a vacancy soon to be filled by Sonia Sotomayor, whose nomination has been confirmed by the Senate