Demonizing people who disagree with you makes them dig in their heels and elect the dangerous candidate and party, in spite of their best interests. Demonizing those people feels satisfying and necessary in the moment, but it ultimately backfires.
The so-called enlightened people can't be counted on to vote. (I say this as one of those so-called enlightened people, albeit not in your country and therefore unable to shift the balance with you. I vote in every one of my country's elections, I strongly dislike the leader of the party I need to vote defensively for. I do it anyway.)
Until you folks figure these two things out, this is your new reality.
(I don't think you can save many of the extremists, but you folks could relatively easily stop the extremist factory by deploying more strategic compassion. But that's just, like, my opinion, man.)
The System is held together with baling wire and gum. Never forget that.
You will get through this, but you might need help and to help others along the way. I wish you many goods and cheese.
There's a certain amount of Gambler's Fallacy in this, too: I'll keep going, because it's going to turn around.