Portland, Seattle, Austin, Chicago, Minneapolis, Baltimore, Columbus, LA... I guess you're right, it's all in one-party cities.

But, that's like, almost all of the biggest cities?

https://en.wikipedia.org/wiki/List_of_United_States_cities_b...

I'm sure there's some cities on that list that occasionally vote for the other party, but I think cities inherently become democrat-leaning because the people inside cities tend to be poor.

NYC seems to be doing alright because they had extreme hardass policies in the 90s (kicking out homeless, literally) but that probably won't last much longer.