The reason they lost the elections 8 years ago and paved the way for Kaczynski and PiS is the deeply rooted contempt that they have for ordinary people.
Sounds like the American Democrats.
Their candidate in the 2016 elections, Hillary Clinton, was famously caught saying this:
"You know, to just be grossly generalistic, you could put half of Trump's supporters into what I call the basket of deplorables. (Laughter/applause) Right? (Laughter/applause) They're racist, sexist, homophobic, xenophobic, Islamophobic - you name it. And unfortunately, there are people like that. And he has lifted them up. He has given voice...The racists, xenophobes, sexists, homophobes and Islamophobes did not receive this message very well.
They already felt that Hillary was a typical representative of the arrogant coastal elites, but being called "deplorable" really rubbed them the wrong way - even if few of them understood what the word meant.
Along with James Comey's reopening of the FBI investigation, this comment of hers probably cost her the presidency.