@Walter Hinteler,
But something precipitated a lurch towards the right.
If not immigration, then what?
PS:
"Besides that," are you actually unable to distinguish between immigration from outside Europe and historical immigration
from the eastern parts of the Empire?
I would hazard a guess that the immigrants from
the eastern parts of the Empire viewed assimilation much more favorably than do modern immigrants from outside Europe.
I would also hazard a guess that Austrian socio-government was less tolerant of the resistance of immigrants
from the eastern parts of the Empire towards assimilation than it is towards a similar resistance from today's immigrants.