The proposed rule, aimed at reducing exposure to a potent neurotoxin, would require water systems nationwide to replace lead pipes that carry tap water to homes, schools and offices
Whenever kids (actual, post birth kids) need protecting, it's all about "who's going to pay" or "taxes are already high" or "but that will be really inconvenient to the upper middle class".
The best excuse I've heard for a bill that would protect kids from pedophiles was "the bill would unfairly target conservatives". I can't remember if this was a federal bill or a local bill but I remember it coming up and people saying "You're telling on yourself."
You're going to see a map of older areas, that is, urban cores and inner-ring suburbs. In other words, I don't think you're going to find the correlation you're probably hoping for.
To be fair, though, the official government line -- uh, until today, I guess -- is that lead water mains weren't actually a problem because of the large volume of water flowing through them relative to the rate of corrosion, unless you did something stupid (like the Republican governor-appointed emergency manager did to Flint) to cause them to corrode abnormally rapidly. Hopefully there isn't much of a widespread correlation between political affiliation and brain damage from exposure to lead via plumbing at all.
Biologist here, it gives you adhd (60% chance), autism, and cerebellar Hypodysplasia (cant remember the incidence rate for these last two, but want to say CH is 8%). Child abuses causes conservativism lol, but lead causes developmental defects starting as early as the embryo.
Source: “Half of US Population Exposed to Adverse Lead Levels in Early Childhood,” Michael J. McFarland, Matt E. Hauer, Aaron Reuben. Proceedings of the National Academy of Sciences, March 7, 2022. DOI: 10.1073/pnas.2118631119
Chicago proves you wrong. Chicago mandated lead pipes long after everyone else was phasing it out. They have high levels of violence now, often believed in part because of that lead, and they are known as a place where liberals have been in control for forever.