Do you remember 1968? If they elite can’t steal the nomination somewhat invisibly and without twisting the laws to the breaking point, that’ll seem like a holiday destination in comparison. That’s not a threat or promise; it’s a real fear that does remember 1968.
Are you talking about the Democrats in 1968? Only about a third of Democrat delegates were chosen in primaries at all back then. Unless I’m mistaken the filing dates have passed in some early states already. “Rumors” of some GOPe bigwigs having wet dreams of some hack riding in to rescue them from the vulgarians are just fantasy.