This website, developed by students at 台灣政治大學, lets people buy and sell stocks of future events (for currency used on the site only.) People can buy stock at the current rate. The end stock price depends on the end result of the event, 100 for true events and 0 for false events and people win or lose currency on the site depending on the results. Its been very successful in predicting past Taiwan elections such as 立委 elections (I forgot the exact stats, something like 90% correct within 30 days and 95% within 10 days of the electing or something), although I’m not sure about presidential elections since it’s such a high profile event I think many people who are not regular users of the site may go and bid too, possibly affecting its accuracy (I’m not sure if it does, just my own guesses.)
I don’t know if there are any US websites like this. I think there should be…“wisdom of the crowds” stuff is pretty popular in the US too.…
I can’t figure out how to combine these two graphs. Note there is a third party candidate with significant support for a third party candidate, so the probabilities don’t add up to 100%). Also note that this set of stocks is for “probability of winning” not “percentage of votes”, that’s a different set of stocks. BTW the election date is 1÷14÷2012.