What is this "GOP coalition" of which you speak??
Perhaps you mean the GOP circular firing squad?
Very simply defined as those Republicans who voted for Trump in 2024 - quite a few of which didn't even like him.
There is a big fissure -- that gets less attention than most -- between the small government/limited spending conservatives, and the populists. In the 70's, the majority of the latter would have voted for Democrats.
Please do not propagandize.
When you have universal healthcare/commiecare republicans on one side,
And you have constitutional/limited government republicans on the other side,
there is no circle.
And since we have resoundingly proved there is no circle, there cannot by definition be any circular firing squad.