Prediction Markets Booked $1.9 Billion on Midterms. Now Comes the Super Bowl

Prediction market platforms Kalshi and Polymarket pulled in nearly $1.9 billion in combined wagers on the U.S. midterm elections, according to a Washington Post analysis. The figure marks the clearest evidence yet that event-based trading has crossed from a niche financial product into mass-market entertainment spending.

The push was visible long before election night. In mid-October, a Times Square billboard displayed live odds of Democrats winning the Senate. The sign did not belong to a polling firm or a cable broadcaster. It was an ad for Kalshi.

What are prediction markets?

Prediction markets let traders buy and sell "yes" or "no" contracts on a range of outcomes, from election results to sports scores. The price of each contract reflects the crowd's collective probability estimate. Kalshi and Polymarket are the two leading U.S.-facing platforms in the category.

The Times Square placement was a deliberate signal. A billboard in America's most-watched commercial corridor positions a trading product as consumer entertainment, not a finance app. Kalshi treated the midterm cycle as a brand-building moment.

Polymarket, Kalshi's main rival, went big on marketing in October as well. Both platforms leaned into the final weeks of the campaign, when public attention on polling and race calls peaks.

Did the accuracy claims hold up?

According to ADWEEK's reporting, Kalshi's election predictions called 98% of resolved races correctly. That track record matters for marketing credibility. A prediction platform lives or dies by whether its odds are perceived as reliable.

The record was not perfect. Kalshi missed some major upsets, including Greg Abbott's loss in Texas. A 98% hit rate still leaves room for the races that dominate headlines, and upsets are precisely the outcomes audiences remember.

Why is the Super Bowl the next test?

The platforms now face a structural obstacle: the NFL's ad ban. The league bars prediction market advertising on its broadcasts, which forces the category to sidestep the Super Bowl entirely.

That constraint reshapes the marketing playbook. The Super Bowl is the largest single audience in American advertising, and sports outcomes are a natural product fit for contract trading. The ban pushes Kalshi and Polymarket toward alternatives: out-of-home placements like the Times Square billboard, digital channels, and sponsorships outside league-controlled inventory.

The midterm result suggests the category can scale without traditional TV inventory. Nearly $1.9 billion in wagers arrived after an October media push built largely outside the NFL's broadcast ecosystem.

What comes next?

The midterms proved demand and, for Kalshi, a mostly accurate forecast product. The Super Bowl cycle will test whether these brands can convert political-event users into repeat sports traders when they cannot buy airtime inside the game itself.