Although there is great disagreement among writers about the definition of "radical" and among radicals themselves over the scope of the word's meaning, there is sufficient agreement to permit a general definition. A Radical is one who advocates sweeping changes in existing laws and methods of government. These proposed changes are aimed at the roots of political problems which in Marxian terms are the attitudes and behaviors of men. - page 10 of the thesis pdf file.
Hillary casually referred to the "Marxian terms" as a further explainer of the definition. I wonder how many more references to Marx are in this?
Don't know, you'd need to run it through a character recognition program to convert it to digital text and word search that.