It's also worth noting that rich is more about assets than income. Someone who makes $50K/year but has $200K in assets and no debt is arguably wealthier than someone who makes $500K/year and is $2M in debt. It would also be instructive to know how indebted vs. debt free people with assets vote at the same income level.
The point is valid but your numbers are way off. 500k guy is much better off financially, it'd be close at more like $150K.
I prefer lifetime income (or even better, lifetime consumption) as a measure of financial well-being, though it's hard to measure for obvious reasons. A top student at Harvard Medical School likely has low income and high debt, but is in a much better financial position overall than a 60 year old janitor with a modest income and modest savings.
I agree. The 28 year old Harvard Med student owing $300K obviously has a much brighter future than a 60 year old who has worked at <2X minimum wage for 40+ years and somehow managed to stay out of debt. But I was going for 4X income invested vs. 4X income in debt.
That gets back at how the $200K guy in Silicon Valley/NYC/DC who owes $2M on a small house might vote more Dem just because he doesn't feel as "rich" as a $200K guy in Mississippi living on a paid off, refurbished plantation estate.