Contrary to the declaration of independence, it is not self-evident that all people are equal. We can say that the lack of women in tech is primarily a result of cultural reasons because we have evidence that there is minimal innate, relevent, difference. We have not shown this to be the case with political parties. Furthermore, we have reason to believe that this is not the case, because political parties carry with them values and ideologies.
>Certainly the social issues are more extreme, but having a ~70% to 10% ratio of liberal to conservative thinking for foreign policy is still very lopsided. I think one all three categories would be too lopsided, not just the last one.
Is there a reason that 50%-50% is ideal? Consider the climate change debate; I do not consider it a problem that the scientific community is lopsided on this issue. Simmilarly, it may be the case that an understanding of these fields tends to make people lean liberal.