I beginning to wonder what your defintion of the word 'conservative' is. What current justices of the United States Court are conservative? Is Sandra Day O'Conner, William Rehnquist, Clarence Thomas, Antonin Scalia, and Anthony Kennedy? Do you read "conservative justice" to mean only Scalia, Rehnquist, and Thomas -or- just Scalia and Thomas. Are any of the current Supreme Court justices conservatives? When using the word 'conservative' do you really mean 'libertarian'?
Using any reasonable standard of the word 'conservative' - as it is used in 21st century American English in reference to political perpective - I believe that President Bush will appoint a conservative to the nation's highest court. Of course that task become easier if Orrin Hatch and not Patrick Leahy is the chairman of the Senate Judicary Committee.