Huckabee, Paul and McCain are now on the right side of this profound divide. Romney and Giuliani on the other. I don't have a great deal of hope that this will be a dispositive issue (in the good sense), but I do know and hope that there are plenty of old-style Republicans out there who are horrified by torture, who uphold America's traditional intolerance of it, and who want to end it. If they still feel at home in the GOP, their choice for president is now clearer.
(By the way, can the Washington Post get its act together and realize that Ron Paul is running for president and has a record on this issue going back just as far as McCain? Jeez: the blindness of the Washington press with respect to Paul is still staggering.)