You wouldn't know it from reading the papers, but the favorite to win the Republican presidential nomination is a confirmed right-winger. On issues such as free speech and religion, secrecy and due process, civil rights and civil liberties, pornography and democracy, this moralist and self-styled lawman has exhibited all the key hallmarks of Bush-era conservatism. That candidate is Rudolph W. Giuliani. As any New Yorker can tell you, the last word anyone in the 1990s would have attached to the brash, furniture- breaking mayor was "liberal" -- and the second-to-last was "moderate." With his take-many-prisoners approach to crime and his...