Hillary Clinton slumps, Donald Trump jumps

Clinton and Trump

The odds that Donald Trump will be elected president rose from its slump on the Iowa Electronic Markets, presumably due to reports about Hillary Clinton’s emails. (GeekWire graphic)

How much of a game-changer is the report that the FBI is looking into emails linked to an aide to Hillary Clinton, less than two weeks before the election? It’s a shocker, based on news reports as well as a sharp drop in Clinton’s stock on the Iowa Electronic Markets.

The IEM is one of the few places in the U.S. where traders can legally put down real money on the chances that a candidate will be elected president. It’s been weighing presidential campaigns – and doing at least as well as traditional polls – since 1988.

The market was set up by the University of Iowa’s Tippie College of Business as an educational project to study whether market-based mechanisms could anticipate real-world outcomes in realms outside the business world.

Other political prediction markets, ranging from PredictWise to FiveThirtyEight to Bing, have followed in the IEM’s footsteps. Those markets, however, generally aren’t as quick to reflect sudden changes in how traders see the campaign shaping up.

Before today, the IEM’s traders were assessing Clinton’s chances of election at around 90 percent. After the FBI news broke, those chances plunged to around 68 percent. GOP candidate Donald Trump’s chances rose correspondingly, from 10 to around 32 percent.

Get the full story on GeekWire.

About Alan Boyle

Award-winning science writer, creator of Cosmic Log, author of "The Case for Pluto: How a Little Planet Made a Big Difference," president of the Council for the Advancement of Science Writing. Check out "About Alan Boyle" for more fun facts.
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