We had McRomneyBush Republicanism from January 20, 1989 to January 20, 2017. We were told, ordered and guilted into voting for these self-serving, greedy, lying, fake conservatives, America hating sellouts ( many of FR still drink this bland hypocritical kool-aid of nothing and demand our votes for this riff-raff) NO MORE! If the GOP thinks this fake conservativism is going to fly again they are in for a stunning surprise. Either the GOP changes or there is a reckoning coming in 2024 that will heal or kill the GOP. If you think McRomney/Bush are vital for the GOP you are as big a part of the problem as they are in the GOP.
Even today, if a Romney/Bush/Kasich were to run as the chosen "R", some would have no problem voting that way. They're hopeless and a large part of why we're in deep trouble.