Are you sure that riksdag means chaotic
It's called a metaphor so that "Polish parliament" means something like 'chaotic situation' (like the old politically incorrect expression "Chinese fire drill").
There's also "polnische Wirtschaft" in German, another metaphor
" "polnische Wirtschaft" oznacza skrajną niegospodarność, brak planowania i manier oraz brud. "
"PW means extreme mismanagement, lack of planning and manners as well as dirt(iness)"