No Men Need Apply:

Dobson also said Rove told him the President wanted to consider only female candidates. "He also made it clear that the President was looking for a certain kind of candidate, namely a woman, to replace Justice O'Connor," said Dobson. "And you can imagine what that did to the short list. That cut it by-I haven't looked at who I think might have been on that short list, because Karl didn't tell me who was not willing to be considered-but that may have cut it by 80% right there."