Prediction Markets vs. Sportsbooks: How Kalshi and Polymarket Are Rewriting the Betting Playbook

PHILADELPHIA, PA – JULY 14: Riley O’Brien #61 of the St. Louis Cardinals warms up prior to the 96th MLB All-Star Game presented by Mastercard at Citizens Bank Park on Tuesday, July 14, 2026 in Philadelphia, Pennsylvania. (Photo by Steve Boyle/MLB Photos via Getty Images)

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With the 2026 NFL season just around the corner, a fresh wave of betting advertisements is set to flood the airwaves. While traditional sportsbooks maintain a steady advertising presence year-round, the arrival of football brings a distinct surge in campaigns designed to capture and engage bettors. This trend is increasingly being driven by the rapid rise of prediction markets, expanding the reach of these marketing efforts nationwide.

Although online sports betting via platforms like DraftKings and FanDuel remains illegal in several states—currently permitted in only 30—prediction markets are navigating a different regulatory path. Because users are technically making “predictions” against other consumers, these transactions can qualify as private swaps, allowing these platforms to operate outside traditional gambling laws.

This legal nuance has ignited a modern gold rush in the sports betting sector. Alongside established giants like DraftKings and FanDuel, emerging prediction market brands such as Kalshi and Polymarket have significantly increased their national television advertising spend this year. According to data from iSpot, overall sports betting ad spend is up 39% year-over-year through August, rapidly approaching $275 million.

Prediction markets account for approximately $50 million of this year’s total spend so far, representing about 18% of the market. However, this figure is expected to grow substantially as both traditional sportsbooks and prediction market brands intensify their advertising blitz during the early weeks of the 2026 NFL season.

Indeed, if Novig’s high-profile campaign starring Sydney Sweeney is any indication, some prediction market brands are opting for bold, attention-grabbing marketing strategies over subtle messaging to make a major impact.

The Legal Gray Area

Despite regulatory hurdles, prediction markets are forging ahead with strategic partnerships. To date, Polymarket has secured official league partnerships with Major League Baseball (MLB) and Major League Soccer (MLS), as well as individual teams like the New York Yankees. Both Kalshi and Polymarket signed agreements with the National Hockey League (NHL) last year, and both platforms are reportedly in ongoing discussions with the National Basketball Association (NBA).

Athletes are also capitalizing on this trend. Ahead of the football season, superstar LeBron James announced a partnership with Polymarket, following previous appearances in DraftKings advertisements. Similarly, NBA champion Giannis Antetokounmpo has joined forces with Kalshi.

In contrast, the National Football League (NFL) has thus far remained opposed to prediction markets, choosing instead to align exclusively with traditional online sportsbooks.

The current surge in prediction market popularity is understandable. Operating within a regulatory gray area, these platforms are creating new revenue streams for leagues through betting partnerships, particularly in states where traditional sports wagering has been historically restricted.

However, this favorable landscape may not last forever. In August, the Ninth U.S. Circuit Court of Appeals rejected prediction markets’ requests to offer sports event-based contracts in Nevada. This decision contradicted an earlier 2026 ruling by the Third U.S. Circuit Court, creating a circuit split that is highly likely to escalate to the Supreme Court. The high court will ultimately need to determine whether these prediction markets constitute sports betting or operate under a distinct legal framework.

As Judge Kenneth K. Lee noted in the August decision, “…the statute does not seem to categorically bar all gaming contracts, despite the text and contextual clues suggesting otherwise. So perhaps some unique sports events can be part of a swap trade if they meet the statutory requirements.” He added that neither side emphasized this aspect of the case due to potential drawbacks that could undermine parts of their respective arguments.

If prediction markets are ultimately classified under the same regulatory umbrella as traditional sports betting platforms, companies like Kalshi, Polymarket, and others would be subject to local taxation and strict sports wagering regulations.

What’s Working In The Meantime

While the legal battles unfold, prediction markets continue to aggressively expand their footprint. Kalshi, for example, has doubled its revenues this year, and Google Trends data reveals a staggering 600% increase in search volume for the brand over the past twelve months.

This impressive growth is largely driven by their effective advertising strategy, which is also influencing how traditional sportsbooks approach their own campaigns. “Kalshi has utilized TV advertising to build brand awareness among both bettors and non-bettors, successfully avoiding the trap of relying solely on deal messaging to drive outcomes,” explained Julie Van Ullen, President & Chief Revenue Officer at iSpot.

By prioritizing humor and entertainment in their creative campaigns, prediction markets generate intrigue without triggering preconceived notions about gambling. This approach allows audiences to engage with the brand on their own terms.

These successful marketing techniques are already being adopted by traditional sportsbooks for the football season. For instance, DraftKings’ new commercial featuring Nick Jonas and Kevin Hart focuses heavily on brand narrative and humor rather than just promotional offers, highlighting its widespread availability across all 50 states by leveraging similar regulatory loopholes.

Although prediction market ads are rarely seen during NFL broadcasts themselves, their broader advertising investments have shifted focus toward non-sports programming and general audiences. Nevertheless, Polymarket and Kalshi are actively partnering with other leagues that run concurrently with the NFL. During the first full weekend of college football, Kalshi ranked second among all sportsbooks in terms of on-air impressions during games, demonstrating a clear strategy to maintain momentum regardless of NFL restrictions.

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