“Duverger’s Law” (you misspelled it) is a principle, not some deterministic physical law. I studied polisci at college, thanks. Read your own link. First sentence - “TEND to emerge”. Not “always emerge”. There’s an entire section in the article named “Exceptions”. One of those exceptions is IN the U.S. Learn the difference between “tendencies” and “absolutely certain physical laws”, this is basic logic/math.

This kind of sloppy thinking is so common in the U.S., I swear to god, this is exactly what I’m talking about with the shitty education system kneecapping the democracy.