The Clinton campaign absolutely did not believe they were going to lose days before the election. You could have made a defensible and germane argument by saying you predicted the outcome of the election, but, nope, your rhetorical reach exceeded your grasp, and you "predicted" something that the press got right and you got wrong.
I didn't even try to predict anything. I just responded to the cancellation of the fire-works in relationship to the media's sureness of a Hillary win. I suspected she knew she was going the lose when the press did not.
And, again, you were wrong about that. There are numerous reports from embeds in the campaign detailing how stunned the campaign was at the loss on election night.