"Strictly speaking, conservatism is not a political system, but rather a way of looking at the civil order. The conservative of Peru ... will differ greatly from those of Australia, for though they may share a preference for things established, the institutions and customs which they desire to preserve are not identical." [Russell Kirk (1918-1994)]Phrases such as a conservative estimate make no sense etymologically.
"The dissimilarity in the ingredients which will compose the national government, and still more in the manner in which they will be brought into action in its various branches, must form a powerful obstacle to a concert of views in any partial scheme of elections. There is sufficient diversity in the state of property, in the genius, manners, and habits of the people of the different parts of the Union, to occasion a material diversity of disposition in their representatives towards the different ranks and conditions in society." ["Federalist" #60, Feb. 26, 1788 (Hamilton)]
Specific focus (in a positive sense) on race, gender, etc. is from 1992.