Then they can do what every other nation that has lost democracy does, elect a dictator with enough party members to undo democracy and kill off the opposition.

Then they can do what every other nation that has lost democracy does, elect a dictator with enough party members to undo democracy and kill off the opposition. Heck, they can get Bolsonaro back in power with exactly this playbook. It'll generally help if the party runs on a moralist/religious platform. "We've sinned and need to bring the nation back to god." That way, as the party breaks laws they can claim to do it in the name of god so that's ok. This even often gives them some wicked heathens to hate. Having a common enemy really brings people together. However, if they can't find that it's easy enough to blame outsiders for all the problems. Perhaps a conspiracy or two about how "those foreigners are taking all our jobs, resources, and are generally making everything here worse. If it wasn't for them, our country would be amazing. Let's make their lives a living hell because they've harmed everyone with their presence" You know, standard fascist stuff.