This link is to a brief video which describes the political spectrum in a coherent way. American Constitutional Moderation is described as the proper role of government.
One implicit point the video made is there is no functional difference between loss of personal freedom and loss of economic freedom. Either case result in genuine loss of freedom. It explains the difference between a Republic over a Democracy, and the desirability of one over the other for promoting human freedom and limiting government power.
This video is Very Useful. Please look. http://wimp.com/thegovernment/