Now that's principled:
Senator Sam Brownback (R-KS) has issued a statement on Harriet Miers' nomination saying, “I have said in the past that I would like a nominee with a proven track record on important issues to all Americans and whose judicial philosophy is well-formed. I am not yet confident that Ms. Miers has a proven track record and I look forward to having these questions answered. President Bush has a long-standing working relationship with Ms. Miers and I trust the President knows her heart and her mind. Even so, the confirmation process has just begun and questions about her views on the Constitution need to be answered. As President Bush and President Reagan have commented in the past, in this regard I feel we must trust but verify.”
Yeah, that's exactly what RedState was saying Democrats should do with Roberts. They're all about forthcoming answers on future cases over there...