I think the reality is that they both cover the spectrum. You have both idiots who are democrat and idiots who are republican, and you have both brilliant people who are democrat and brilliant people who are republican.

My guess is, if you had the resources to figure out everyone, it's probably about even.

(And probably, more accurate to use liberal and conservative rather than democrat and republican)
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"Nature has constituted utility to man the standard and test of virtue. Men living in different countries, under different circumstances, different habits and regimens, may have different utilities; the same act, therefore, may be useful and consequently virtuous in one country which is injurious and vicious in another differently circumstanced" - Thomas Jefferson, moral relativist