Apologies for my late reply. I checked the URL, there is one question left. Does the data actually show polling station data? I can see that it is separated by "district" and "const". What does "const" mean and is this similar to polling station level? Given the high voter numbers I doubt that, but would love to hear your thoughts first.
Otherwise we cannot accept this dataset (we only focussed on highly disaggregated elections data at polling station level this year, I'm happy to add a note about the availability of this dataset though)