Wealthy white well-educated urban folks tend to vote Democratic;
^^But not nearly to the extent that urban working-class (especially non-white) voters are Democratic.
Also, a lot of well-educated Americans (particularly in large metropolitan areas-i.e. those very friendly to the Democrats- where there is a lot of competition for higher-paying jobs/the kind of jobs that
require a Bachelor's Degree or higher) are not wealthy. Many (particularly but not exclusively the younger ones) work in service-sector type jobs that they are overqualified for (in terms of educational attainment, at least). Those urban residents who are younger, highly educated, less economically secure, and more transient than most other groups would vote very heavily for the Democrats, I suspect-to the extent that they vote at all, of course.