How do Democrats do amongst those making over $400,000?

[TML]

I think it depends on where these people stand on social issues - there is a substantial share of affluent people who are socially liberal, mainly because large corporations understand the need to appeal to a wide range of demographic groups (not just straight white men), and Democrats do pretty well among this group. Among those who are socially conservative, that's an entirely different story. For example, in Kings Point, NY (an affluent community close to where I live), even though over half of the adult population has higher education, most of this area's residents are Catholic or Orthodox Jewish, both of which are socially conservative, so this community is a Republican stronghold. On the other hand, East Hampton, NY (another affluent community in the metro NY area) is relatively secular and also has a majority college-educated population, so this community is a Democratic stronghold.