It’s important to parse the language and understand the domain. Major party affiliation of red + blue usually only adds up to about 60-80% in most regions. Not

It’s important to parse the language and understand the domain. Major party affiliation of red + blue usually only adds up to about 60-80% in most regions. Not everyone is eligible to vote, registered to vote, or votes regularly. If people look at the percentage of the vote that Biden/Trump got in the most recent election, they are looking at the narrow end of the funnel. The “55% blue” is likely a cross-section closer to the beginning of the funnel. Also worth pointing out that Chicago has a 100+ year old “political machine”. I don’t remember the specifics, but each neighborhood has extremely powerful local politicians that hold a party office, but not a government office. It is not typical for American cities.