Well, there is Zell. You might be right, but rick in right there with him
Zell could have changed parties and made a difference, but he didn’t.
There were many more or less conservatives trapped in the Roosevelt aura. Where I was born and raised you didn’t register as a Republican, or you never got to vote in a primary. I did register as a republican to the eternal dismay of my mother who never forgave me. Strangely she did however admire Reagan, maybe even voted for him.