[wilg]

Here is the historical data for the 2018 House forecast:

- Web: https://projects.fivethirtyeight.com/2018-midterm-election-f...

- JSON: https://projects.fivethirtyeight.com/2018-midterm-election-f...

You are correct they do not publish the exact math of the forecasts, but you can see how the forecast changed over time.

[tweezy]

The link I provided does actually show every single forecast 538 has ever made. OP was wrong when they said it was the raw data they use to make the predictions. Check out the link I provided, it has everything OP was asking for.

[wilg]

Nice! I didn’t poke into it much further cause I knew about this one.