Here's one election they can't rig. But if your mood changes after you vote, you can, and should, go back and vote again. And again. And again. That's the whole idea.
The basic pattern is, the index score starts out lower and climbs as the season advances. Everybody's happy by the time Cristmas gets here. Quel choc. But how happy? That does vary, and this year ought to pose a good test. So do your part. Don't let some other guy dictate our national mood.