Chicago's Poles seem R as well. The four Cook County townships that went R are also the most Polish. Norwood Park is about 30% Polish.
Perhaps there's a Polish immigrant/Polish American difference? The Cook County Polish areas are quite immigrant (or 2nd generation), I'm sure they outnumber the Bill Swerski superfan types. It seems like third and fourth generation Polish Americans have dispersed to the collar counties or have even left the region entirely.
Yes, more recent (80s-90s) immigrants are still distinct in their political behaviour. For obvious reasons (anti-communism and the associated Neolithic ancestral cult of Reagan, strong religiosity), the Polish right is traditionally very sympathetic to the GOP, and the Polish immigrant community in Chicago happens to also be a well-known bastion of the Polish right. The community in NYC (usually associated with Greenpoint) has historically also had this reputation, but for whatever reason (presumably generational in some way), unlike Chicago that seems to be getting washed out in recent Polish election results - I can't speak for stateside.
Obviously, even if they often vote GOP too, third or fourth-generation Polish-Americans aren't carrying around the exact same idiosyncratic mythological baggage. Tho amusingly, this didn't stop PiS apparatchiks speculating in 2020 that Polish-American voters would save Trump in the Midwest specifically because PiS was rooting for him, or just because of the somehow innate right-wing character of Poles.
