It doesn’t answer the median question, but lower income households identify with the Democrats by 58-36. Upper income voters also favor Democrats, but only by 53-46.
The picture of Republicans being the party of the poor relies on a picture of the poor that only includes rural white people.
https://www.forbes.com/advisor/personal-finance/average-income-republican-vs-democrat/
It doesn’t answer the median question, but lower income households identify with the Democrats by 58-36. Upper income voters also favor Democrats, but only by 53-46.
The picture of Republicans being the party of the poor relies on a picture of the poor that only includes rural white people.