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Christopher L Groesbeck's avatar

Thanks, all three have strong messages.

Sean Byrnes's avatar

The reliability of election forecasting models has less to do with the number of data points, and more to do with a changing environment. Yes, we only have presidential elections every 4 years but we have many polls in those years and many other kinds of elections! And since an election is a binary choice the model can be trained on less data and still be robust.

What's more relevant for election model precision is that the population you are predicting from is constantly changing. The people who respond to polls today are vastly different than even 4 years ago, and different again than 8 years ago. You can't build models using historical data if the history is so different from the present.

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