We’re not all middle class. That would make a mockery of the word “middle,” which implies that there are lower and upper classes. Some of us are working class, some are middle class, some are upper middle class, and some are rich. Policies that help the rich by cutting their taxes do not help the working and middle classes. They actively harm the latter by making less money available for government services and by devaluing the dollar.
The Republican Party mainly represents the rich. It also reaches out to rural people and claims to help them, but it is all lies. It mainly represents the rich.