Very wealthy people will always lean to the left because once they've made it, as they do not want opposition or, god forbid, competition which could put their pedestal under pressure.
Philanthropists are prime example of such behavior as they throw big crumbs of bread to their feet and watch the resulting havoc with a smirk.
Dem or Rep is for the dumb masses who are too lazy/scared to look into the mechanics which drive the political landscape.