In election race, prediction markets are challenging traditional polling
Briefly

"The way that the prices are set on the Polymarket is just by the trading of the individuals on the exchange. So it's very much similar to the New York Stock Exchange, or any kind of stock exchange, in that the prices are set by a bid and an ask."
"While individual bettors in the market may have gaps in their information—or biases—taken collectively, the bets on crowd-sourced platforms add up to an extremely well informed opinion on the outcome of the election, and they might be more accurate than traditional polling."
Read at Fortune
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