Kalshi suspends three congressional candidates over election betting violations

Kalshi has suspended three U.S. congressional candidates for five years after internal reviews found they traded on markets tied to their own elections during primary campaigns. The platform said the cases amounted to political insider trading and showed how a growing prediction market can still be vulnerable to conflicts that regulators have not fully settled.

The company said the penalties ranged from $539 to more than $6,200. It also said the candidates were flagged by newly released safeguards designed to block politicians from trading on contests in which they are involved. Coverage identified the candidates as being from Minnesota, Texas and Virginia.

Kalshi said the enforcement was part of a broader crackdown on political insider trading and market manipulation. The company’s market-integrity materials say insider trading and market manipulation are prohibited under federal law and under its exchange rules. Its enforcement page says accounts can be frozen when suspicious activity is flagged, and that suspected candidates or government employees can be investigated and suspended if prohibited trading is found.

The move followed Kalshi’s March rollout of new technological guardrails intended to preemptively block politicians, athletes and other relevant people from trading in certain politics and sports markets. Kalshi said the safeguards were built in response to CFTC guidance and congressional bill proposals, a sign that the exchange is trying to get ahead of rules that still leave room for ambiguity around who can profit from politically sensitive information.

One recent enforcement notice described a candidate who traded about $4,000 on a market related to his own campaign and received a five-year ban plus a financial penalty equal to 10 times the trade size. Together with the latest suspensions, the action suggests Kalshi is escalating its penalties and trying to formalize compliance through public notices and a searchable archive of disciplinary actions.

The crackdown lands in the middle of primary season for the 2026 midterms, making the punishments more than a routine compliance step. For critics, the cases sharpen a bigger question: whether prediction markets can stay credible if candidates, officeholders or other politically connected participants can use nonpublic knowledge, campaign access or inside positioning to tilt the odds in their favor before Congress or federal regulators set clearer norms.