Potpourri By John Sides on May 10, 2013 Great new data from Boris Shor and Nolan McCarty on the ideologies of state legislatures. The length of the average dissertation. Polisci dissertations are pretty long, it turns out. [Hat tip to Eric L.] Norm Ornstein on presidential leadership. The Michael Moore of the Grade-School Lunchroom. Tiger moms don’t make better parents.