As stated in the other articles, the main axis of conflict between the parties and the electorates used to be of economic nature.
Even with a wild imagination it is hard to imagine a coalition or even a civil cooperation between PO and PiS. The two parties are like two hostile tribes fighting for the electorate. It is a miracle that the aggression and polarisation in the Polish public debate hasn’t led to a battery in the parliament yet.
Poland is a gorgeous country possessing a rich culture with a very difficult, yet beautiful history and a lot of open and warm people.