@Sunzi...the "different moral perspective" you reference is this: Conservatives have a more clearly defined and rigid definition of what is right and what is wrong, generally down to specific activities, whereas Liberals tend to be morally * relativistic*. A common phrase heard by Liberals would be "Well, *I* would never do that, but if they want to, go for it" (for example, in reference to abortion, or anal sex...). The Conservative would say, "I wouldn't do it, it's wrong, and you shouldn't do it either."
This is NOT a moral judgement on either philosophy, it is simply saying Conservatives have a more well defined (rigid, strict, etc) moral compass.