Specifically, this is about predicting which states end up voting for which presidential candidate.
(Default 538 model.)
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@LarsDoucet I would advocate for "whatever the default model is displayed to a new visitor to the site", but would be nice to get that confirmed @IsaacKing.
@IsaacKing What probability would you say 538 had given for a state it predicted to be ">99%" likely to have a particular outcome?
Interesting to consider how manipulable this market is. With 538-betters being profitable this last cycle, I might expect prices to be very close to 538 the day before the election. A coalition could attempt to match the manifold predictions to the 538 predictions closely and then make a single big bet on a very likely state which would then dominate the Brier score.