Given that the democrats have gone almost 100% liberal I don't know if that distinction can be made todayThis is true. A "conservative" Democrat is a relative term. At best such a beast would be in reality a centrist, and other than Zell Miller I am not sure I can think of any (and he is not as conservative as he has been playing lately, unless he has changed his stripes from his days as my Governor when I lived down there).
Today's Democrats are liberals, socialists, and communists. And those to the left of them make up the Nader/Green Party goons.
Definition: A person ashamed to be a Democrat but lacks the integrity to change.