Larry Solum of the Legal Theory Blog responds to the prevailing wisdom that Roberts' appointment will move the Court to the right.
He makes a few good points. For one thing, Rehnquist was pretty conservative. It's hard to see Roberts being more conservative than his old boss. Moreover, Roberts will not be a swing vote, so even if he is more conservative, his vote won't change the Court's decision.
Solum is absolutely right. Which is why I don't understand liberal opposition to Roberts. He's no worse than Rehnquist and his vote won't change anything. And it's not like being Chief Justice gives him an extra vote or something.