[dgr582systems]

Exactly this. Where is the verification?

Predictions don’t count for much unless you check that the expectations line up with reality.

[dragonwriter]

IIRC, 538 has available both the polling data and predictions for all of their political forecast series (not just Presidential.)

[danhor]

538 has some infos about this here: https://projects.fivethirtyeight.com/checking-our-work/