Very simple solution! The voters need to let each one of them know their dissatisfaction and they will have a primary fight like no other when they come up! AND THEY NEED TO BE SCRUTINIZE ON EACH VOTE FOR THEM TO REMEMBER!
They don’t care. They let conservatives lose, example Roy Moore. Remember the shenanigans to keep Murkowski in her Senate seat after she lost the Primary? They gave up the House after Traitor Paul Ryan had done his part to destroy the nation. We get rid of traitors Jeff Flake, John McCain, and Kelly Ayotte, and other Republican US Senators step up to fill their place.