Well I'm not saying I agree with the characterizations, lol, but the democrats are predominantly either the very richest in the country, and the very poorest in the country.
Almost every single billionaire is a democrat. Almost every billionaire world wide are left leaning.
Middle America with the exception of Lawyers and Government workers and Union Members, are republican.
Almost all small business people are republicans. Most of the middle "class" who are not parasite types like lawyers and union workers, are republicans.
These are FACTs ... unfortunately people have been so misinformed by TV (By left leaning billionaires who own nearly all of the Media and Entertainment Industry and hang the rich meany tag on republicans so they will be hated, while the democrat billionaires are those elite types who put them selves above the public and most of the public identifies as republicans).