I think evidence of foreign influence will be the deciding factor.
I think most normies mid-center to mid-right would agree that US elections should be run by US government entities. Show evidence of how Bernie got screwed, as well as senate/congressional candidates. How did Graham emerge unscathed? Why is AOC talking off hanging up the cleats?
Sequence would be evidence of foreign interference with knowledge/approval of vested US parties, then add the trafficking, pedophilia, etc. stuff as the reason they did it.
Foreign intervention is an act of war, so military is justified if war is declared. Complicit pols (and not just dems) would be accomplices/collaborators. Non-uniformed. Gitmo. Fuck the civilian justice system.