Evan has a habit. He's not ashamed of it, but he doesn't want to reveal too much about himself, lest his colleagues learn how he's spending so much of his time. Like so many others, the middle-age software developer can't look away from the presidential election. But his fixation takes a particular form: with every browser refresh, he hopes math will reveal the future.	 Evan is a poll obsessive, FiveThirtyEight strain-a subspecies I recognize because I'm one of them, too.

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