With apologies to our many friends and posters outside the United States... it's time for another one of these! Culture war thread rules apply, and you are permitted to openly advocate for or against an issue or candidate on the ballot (if you clearly identify which ballot, and can do so without knocking down any strawmen along the way). "Small-scale" questions and answers are also permitted if you refrain from shitposting or being otherwise insulting to others here. Please keep the spirit of the law--this is a discussion forum!--carefully in mind.
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Notes -
Yesterday, I put down various cash bets around Harris winning the Popular vote. "Surely Dems win the popular vote regardless of the electoral college!"
I actually was convinced that I was onto a free money glitch by buying "Harris/Dems win the popular vote" at 25cents. I also put bets into "Trump wins 2/3/4/5/6 swing states", neglecting to even consider he wins all seven swing states.
Whoops, NOPE! I'm grossly miscalibrated. I actually did not have faith in prediction markets, and thought all "dumb" rep voters were skewing Polymarket/Kalshi etc. I'm laughing at myself that I actually thought I'm not at the top of the bell curve.
How do i get better at this? Some of my current thinking is:
what else have i missed? Gotta think on this more.
Maybe I will do more small prediction market bets to hone my forecasting. Does anyone here know if this is a skill that can be honed and trained, without dedicating your entire life to it?
The main thing you missed is that the swing states are correlated. If the polls miss extra Trump support, that will most likely materialize across demographically similar states. A 2-3 point polling error in Trump's favor (one standard deviation) wins him all the swing states.
Except there’s three groupings of swing states by demographic- older and whiter(the blue wall), blacker and more religious(Georgia and NC), and secular urban with lots of Hispanics(Arizona and Nevada). We wouldn’t expect these three groups to be correlated with each other much at all.
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Polling errors are usually reported at two-sigma, but regardless this misses the real problem -- which is that they don't account for systemic error at all, which clearly exists in spades for Trump. (although not uniquely so -- this phenomenon seems to exist globally, to the point where you'd do better considering it to be baked in than not.
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