Do minority groups in european nations vote as heavily for the liberal parties

[Yeahsayyeah]

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This seems to be more a matter of catholicism and the role of the CDU during the GDR in the catholic sorb area between Kamenz, Hoyerswerda and Bautzen, though.
Protestant Sorbs around Weißwasser and in Brandenburg seem to vote much like the Germans around them.

I would not call the Huguenots an distinguishable ethnic minority today. Politicians with French names are mostly liberal CDU types, of course.