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2) Going into the election, they'd have to be off by 5% nationally for Trump to win: projects.fivethirtyeight.com/2020-election- In fact, it looks like Biden will win, as they predicted. electionbettingodds.com But it looks like a ~1% swing nationally would make it a dead heat.
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3) So they were off by about 4% on the tipping point odds. They said 10% chance Trump won (~outperforms by 5%). In fact he outperformed by about 4%, which would have had ~15% chance if you assume normal distributions. So this should be in the ~85th percentile of Trump.
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4) 85th percentiles happen sometimes! And it's not *proof* they did anything wrong. But.... The world was definitely signaling, generally, that 538 was off in that direction.
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5) Prediction markets, for instance, had Trump around 35% going into the election. ftx.com/president2020 If you take 538 and shift it by enough so that Trump is 35% to win, you'd have to shift it by... about 3.5%. Which is pretty close to how much 538 was off by.
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6) None of this proves anything! But it is at least a datapoint in favor of "prediction markets were about right going in, 538 was way too low on Trump". That's not the only possibly narrative. But it seems like the obvious one.
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9) C'mon, man. You've done great, overall. You did better than most in 2016, after nailing 2008 and 2012. 2020 was bad by not terrible. It's time to own it.
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What you're saying sounds very influenced by your emotions (and that of bettors) during the election, but not actually based on what the data will eventually show. Biden is likely to win with more than 300 EVs or at least around there. That's a miss for Vegas, not 538