This One Simple Trick Will Allow You to Make a Killing Betting on the Presidential Race

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Jim Tankersley examines the presidential odds at PredictWise today and concludes that punters are probably underestimating Hillary Clinton’s chances of winning. Why? Justin Wolfers explains that it’s likely due to something called “longshot bias”:

The favorite tends to win in betting markets more often than indicated by the odds. So if the markets say she’s a 47% chance to be president, history suggests that the true odds are a bit better than that.

….There’s another way to get at this though, which is simply to ask whether the odds make sense. I think the idea that Clinton is only a 75 percent chance to win the nomination is nuts — she’s essentially the only serious candidate running, and it’s now clear that her campaign is not going to implode. With any candidate there are risks that secrets may come out, but with Mrs. Clinton, we’ve had several decades for them to surface. So my (personal!) judgment is that she is at least an 85 percent chance to win the nomination, and maybe 90 percent is a more realistic assessment.

OK. But what I want to know is why the betting markets say that Democrats have a 58 percent chance of winning the presidency, but the combined chance of all the individual Democratic candidates is 63 percent. There must be some way to arbitrage this so that you’ll make money no matter what happens. Right?

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BEFORE YOU CLICK AWAY!

“Lying.” “Disgusting.” “Scum.” “Slime.” “Corrupt.” “Enemy of the people.” Donald Trump has always made clear what he thinks of journalists. And it’s plain now that his administration intends to do everything it can to stop journalists from reporting things they don’t like—which is most things that are true.

No one gets to tell Mother Jones what to publish or not publish, because no one owns our fiercely independent newsroom. But that also means we need to directly raise the resources it takes to keep our journalism alive. There’s only one way for that to happen, and it’s readers like you stepping up. Please help with a donation today if you can—even a few bucks will make a real difference. A monthly gift would be incredible.

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