Every competent judicial nominee can give the speech about oh-how-important precedent is. That's not enough. An express commitment to Roe itself is necessary.
Here's what then-Judge Clarence Thomas said in 1991. 
This, from then-Judge Alito, was good enough for Sens. Specter, Collins, and Murkowski to vote yes in 2005.
Judge Antonin Scalia said this about Roe and precedent at his confirmation hearings. Unanimously confirmed.
