As long as I agree with the platform of the party, why should it matter to me what other types of people are voting for the party?
This assumes that ideology and perspective are independent of each other, which I don't think is accurate. Class has an enormous impact on the sorts of policies and ideas people are open too, both from the standpoint of social values and self-interest. You won't find many bankers in the Socialist Party, for instance. Personally, I think the duality presented by this poll is too restrictive - the distinction between working class laborers and middle class professionals is quite important - but generally, the philosophical question (whether sovereignty ought to rest with the demos or the optimates) is an important one.
For myself, obviously the people (Jeffersonian).