I’m pretty sure the law has a lot more to do with existing property owners trying to preserve the value of their own property, than it has to do with lobbyists hating Democrat party bloc voters for literally no reason at all.

Though the latter story does get out the ol’ vote. I guess working class people with a mortgage are the Kulaks now.

We're discussing zoning codes that were essentially set in the 1940s and 50s, and have only been incrementally adjusted since then. "Democrat/Republican" wasn't a salient distinction for this issue at the time (and much of the Democratic base had the opposite racial salience.)