@lispi314 the writer's Guild also is not a trade union, as writing is not considered a trade. There are also labour unions, but a labourer does not hold any specific trade designation, so a labour union isn't a trade union. People of every profession have the right to organize and form a union for their profession, but it's up to them to get the cards signed and get people out to vote. They can't do that working from their homes.
@quirk Why is that? I managed to vote for my national elections by mail, so there's certainly precedent that it's feasible.
And I see that your objection was primarily about the technical category (which happens to translate a bit weirdly with technical schools & their options being trades as my country and its people tend to consider them).