The Republican political strategy of using resentment to motivate voters whose lives and financial situation gets worse every single year yet is entirely caused by the people they elected in the first place who in turn further prop up and validate their resentments.
One example is Ohio voting for Trump because he promised to bring jobs back and then in turn voting for Portman who voted for every single free trade agreement in his political career.
This is literally Thomas Frank's thesis in
What's the Matter with Kansas?. The book was written in 2004 and things have only gotten worse.