Democrats won big on Election Day. Prediction markets gave an early glimpse

Democrats won big on Election Day. Prediction markets gave an early glimpse

A dominant performance by Democrats in the midterm elections created a political earthquake, shifting the balance of power in Washington, D.C. But most of Tuesday’s results were foretold in the hours before polls closed by online prediction markets .

Platforms, like Kalshi and Polymarket , have proven capable in recent election cycles of providing an increasingly accurate view into the public’s perception of likely political outcomes and current events.

They performed with impressive accuracy again on Tuesday, as traders poured billions of dollars into election markets at a time when the platforms face growing scrutiny from lawmakers about the dangers of insider trading and gambling addiction.

“There’s no way around it, the prediction markets seem to be highly accurate,” said Ross Dahlke, an expert in computational social sciences and a professor at the University of Wisconsin-Madison.

“The markets just react so quickly to new information in a way that a lot of traditional media isn’t set up to do, particularly with their concern over accuracy, fact-checking — for better or for worse,” he added.

Democrats were expected to perform well on Tuesday, given widespread voter concern about the economy and war with Iran.

But the volume of trading on prediction markets this election cycle and the speed with which the platforms were able to correctly predict races was notable.

Many of Tuesday’s key race results were being projected accurately on prediction market platforms hours before major TV networks, which use decision desk data and voter analysis to make race calls, declared winners.

Kalshi, one of the nation’s most widely used prediction market platforms, said Wednesday its markets had correctly predicted 98 percent of House, Senate, governor, attorney general, lieutenant governor and secretary of state races.

The company said it compared market favorites at 5 p.m. EST shortly before the first polls closed in Indiana and Kentucky to races that have been called so far.

Check out a full report at TheHill.com .

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