You don't count Kennedy among the liberals?
Kennedy is moving towards Stevens - unpredictable, off the wall, etc. Stephens is a space cadet and Kennedy is getting there.
Not really. Despite this enormously disappointing vote and opinion from him, he normally votes with the conservatives and is more of a swing vote like O'Connor. It's possible that he's shifting as he ages to more liberal views, but his historical track record hasn't been bad.