The GOP needs to finish dumping the Establishment Uni-Party types and become the party of the working class people!
Donald Trump recalibrated the Republican Party and helped to turn it into a nationalist-populist movement that would rather win rudely than lose politely. The MAGA agenda pushed Jacksonian deterrence rather than unpopular nation-building abroad. It finally focused on fair rather than just free trade. Republicans now unite in demanding only legal immigration and promoting domestic investment rather than globalist outsourcing and offshoring.
In response, many of the old Bush-Romney country-club wing left in disgust. Others licked their wounds as fanatical NeverTrump something or others.