"Time" is just whistling past the graveyard. The last time the party on top splintered was 1912, when TR took the early progressives out of the party. We have nothing like that movement going on now.
You mean Teddy Roosevelt cleaned house of the " Progressives " or did he take them with him ?
We splintered in 1992. Your essay completely ignores Perot and his con job that got Clinton elected.
Also, never forget the impact the coddling of murderous maniacs and the abolition of the death penalty by activist judges had on the conservative movement. By the late seventies, crime was a much bigger issue than busing.