Which Justices Vote Together?

It’s commonly assumed that Justices Scalia and Thomas are the two Supreme Court justices who are most likely to vote together.  However much that may have been true during Justice Thomas’ first several years on the Court, it is becoming less true over time.   This past term, according to statistics collected by the folks at SCOTUSBlog, the two sets of justices most likely to vote together were the Chief Justice and Justice Alito (96.2%), and Justices Sotomayor and Kagan (94%).  Perhaps even more surprising, the Scalia-Thomas pairing was not even in the top ten most common pairings.