I estimate the number of additional votes for PiS
You exaggerate as usual. :):):
Germany's SPD party decided to strongly reinforce PiS
I doubt it is an original German idea. It must be Russian moles in SPD who try to add fuel to the fire. Russians certainly prefer to keep the anti EU PiS gov in Poland, hoping for Polexit one day.
But the fact is that stupid SPD Germans allowed Russians to play such a trick on them. Amassing!