Because rich or poor I am a good human being and not a piece of shit.
It's kind of nice that Eddie just flat out admits "I'm rich, I have mine, so fuck those people".
Since he claims to have always voted Democrat before, I guess he got rich and then immediately switched to the GOP because they would protect his money and his power over poorer people.
Just good old fashioned "The underclass need to obey their betters" the moment he thought he had the assets to qualify as being able to lord it over people.
Just pure self-interest - vote for the Democrats when he was poorer or middle class, but the moment he could turn on others, he did.