I think that is actually true. The average poor republican doesn't want to be wealthy, if that would mean that <insert minority of your choice> would also become more wealthy or have more rights. This also applies to other political subjects. I mean a poor republican who works a terribly paying job with no worker rights or healthcare would actively vote against politicians who say they'd want to change that situation, just to make sure that underage girls that got raped are forced to give birth to their unwanted childs they then can't provide for.