Unless and until we can convince the majority of the Black Americans that the democratic party has become their enemy, there is no chance that a 3rd party will win any election. Let’s face it, 40% of the population will vote “DEMOCRAT”. Out of these 40%, the blacks voting democrat is about 15% of this 40%. A combination of conservatives, about 35%, plus the 15% of the black Americans, yep we can get rid of these “PROGRESSIVES”. But without this combination, a 3rd party will only guarantee a democratic win.
There must be a principled third party with a broad appeal defending core principles like UKIP does with its appeal to working class voters being hurt by immigrant cheap labor and conservative voters concerned about national sovereignty being lost to the European Union.
You paint a disastrous scenario, I see hope for a positive one in the end. Love will overcome the racial hatred being twisted into people’s backs by the Democrat and Republican Uniparties with their witch hunt against flags and statues.