In retrospect, then, Bush should have left Roberts as the replacement to O'Connor, since his nomination was so hard to fight. He would have an easier time arguing that a conservative to replace Rehnquist was acceptable.
Now he has allowed them to argue that a conservative judge replacing O'Connor "moves the court to the right."
To argue thusly is to accept and enshrine bogus leftist cant. There is no precedent for any requirement that a nominee be ideologically similar to the departing justice, or that the existing "balance" of the court must be maintained. This is just leftist B.S. introduced at the present time because we have a President who has promised nominees more conservative than the current court. The "balance", such as it is, should result from the electorate electing successive Presidents based in part on their judicial philosophies. President Bush said what sort of jurists he would nominate, he was twice elected, so let's roll! Leftist propaganda should be scoffed at, rather than accomodated!