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by StreamBright 2066 days ago
It pretty much means nothing. These sort of models produced wrong result again and again. For me the biggest question mark if that if we know that recent (last 5) elections were very close how can you predict somebody winning with 93% chance? Maybe I do not understand something here.
2 comments
dragonwriter 2066 days ago
> These sort of models produced wrong result again and again

IIRC, 538s election models (house, Senate, and Presidential) have been quite accurate in aggregate.

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swader999 2066 days ago
Agree. Polls are a bad metric to rely on. Only 2% of those asked respond. Impossible to get a statistical sample with that. People are bad at predicting their future behavior. They are dishonest, they don't know or just don't want to tell you. There's a huge class divide right now. The bigger the class divide the worse polls are historically. And we know they are wrong this time around. None of the early voting margins predicted have held close. Better predictors are Google trends, rally participation, and voter registrations.
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disgruntledphd2 2066 days ago
Sure, these are all concerns. However, as long as they are not systematic errors for or against one candidate, they end up not mattering very much.

Andrew Gelman (the author of this post) has also done a bunch of work on how different parties supporters become more/less likely to respond to polls based on what the current results are, which has been incorporated into the newer forecasts.

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