Souther Baptist theologian--and one of my favorite bloggers--Albert Mohler, highlights an article from two academics who, though apparently on the Left themselves, do somewhat acknowledge what many conservatives have said for years--many justices, once on the SCOTUS, tend to drift leftward.
(from Dr. Mohler's blog post)
They were right to be concerned. While there have been a number of relatively reliable conservative justices over the years--Antonin Scalia, Clarence Thomas, and Rehnquist being prime examples--and some important right-shifting exceptions--notably Felix Frankfurter, appointed by Franklin D. Roosevelt, and Byron White, appointed by John F. Kennedy--the tendency in recent decades to drift leftward has been strong enough to gain both popular and scholarly attention. Indeed, Larry J. Sabato, the director of the University of Virginia Center for Politics, has suggested that about one quarter of confirmed nominees over the last half century have wound up "evolving from conservative to moderate or liberal."