I mean that citizenship can now be taken away, in most of Europe, from people who have it and were born in the country and don't have any other citizenships (which is a direct violation of Human Rights: it's not allowed to take someone's last citizenships. Only double citizenships can be taken away)

Also, I doubt very much that worldwide competition for skilled labor is a real problem for voters of right-wing parties. Or left-wing parties for that matter. Skilled labor is just not a sufficient percentage of the population to matter for voting.