Funny but the Chicago burbs used to vote overwhelmingly Republican - in the 2016 election, I think every one of the collar counties, including DuPage, went for Clinton.
You are right. Even my Lake County went communist. DidN’t used to be that way. Probably because so many Chicago pukes moved to the burbs because they couldn’t take shitcago anymore. But they brought their voting habits with them. Sort of like New Jersey moving to NC.
I’ve lived in Dupage County since 1991. Lefties from Chicago have been moving out here in droves, and bringing with them the same voting habits that make Chicago the insane asylum it is. They are like a cancer: They destroy one place, and when it gets too bad even for them they leave and do the same thing at their new place. Dupage County used to be conservative and very traditional; unfortunately, liberals could not stand the idea that there was such a place, and they are intent on turning it into Cook County.
I grew up in California, and they did the same thing there (I left California for good in 1979, and haven’t looked back).