The fact that Russian lands are better developed than Austro-Hungarian ones is certainly puzzling.
Mentioning the level od development in three partition zones, I didn`t say are
I understood he means that Russian lands were more developed than those in Austro-Hungarian lands,
You understood correctly because that`s what I meant. Poles, Russians, Germans and Jews in the Russian partition zone created the industry which exported a lot of goods to Russia proper. E.g., read about Łódź which was the biggest manufacturer of textiles/fabrics in the whole Russian Empire.
and thus people that vote there have more progressive views (albeit, still PiS voters),
Sorry, but now you mixed everything. Typical PiS voters aren`t progressive. :):)
Your maps are wrong because they are based on the borders of modern day Poland.
No, they aren`t because they better show the similarities between former partition zones and today`s voting patterns and that`s the topic of this thread. Besides, we are talking about borders.
Most of Pomerania and Silesia were never part of the Prussian partition.
Yes, I wanted to mention a strange phenomenon - people living in the lands acquired from Germany after 2 WW also vote like those in ex- Prussian partition.