The Supreme Court wrapped up its term this week, marking a transition year with Justice Alito and new Chief Justice Roberts replacing Justice O'Connor and deceased former Chief Justice Reinquist. Today's New York Times' Supreme Court analyst Linda Greenspan took a look back at the last year to see whether Roberts had become the chief judge in fact as well as in name. Her conclusion: not yet.
The elegant graphic above shows the percentage of times that each justice agreed with every other justice. Scalia and Stevens voted together only 13% of the time. On the other side of the spectrum, Alito and Roberts, the Court's two newcomers, voted together 91% of the time. Scalia might have a new best friend on the Court, seeing as how he voted more often with Roberts (88%), than with Thomas (83%).
For a separate analysis, check out Rebecca Cady's report over at the Supreme Court Institute at Georgetown University Law Center.