no party in Poland has at the moment a monopole on governing
One is very much trying too manipulate the system to obtain one party rule - the whole point of this discussion is about their blatant attempt at a coup d' etat. Perhaps you've missed that somehow, just as you've somehow missed the thousands attending Polish pro--democracy rallies.
electer (regular judges) and the Supreme Court judge
Neither are directly appointed nor can be arbitrarily dismissed by the Party of the day. Something else you've missed.
this led to many scandals and unfair rulings
I'm sure that even you don't think that judges who depend on the patronage of the screamer Kaczynski, the deranged Macierewicz or the sinister Ziobro are likely to be less rather than more scandalous and unfair
Which is why thousands are turning out on the streets each evening, and why 87% of Poles are concerned that democracy is being eroded.
You have no valid argument here, none at all.