Kalshi suspends Democratic U.S. House candidate for bet on own primary race
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Prediction market Kalshi has suspended Democratic U.S. House candidate Matt Klein after he wagered $50 that he would win his suburban Twin Cities primary race.
Why it matters: The trade violated the platform's rules against insider trading.
The intrigue: The Mendota Heights state senator currently chairs a committee that oversees sports betting, and also co-authored legislation that would severely restrict prediction markets like Kalshi in Minnesota.
What happened: In a statement, Klein said the October 2025 transaction was the first and only trade he's ever placed on a prediction market: "I was curious about how it worked."
- Klein paid a $539 fine and cooperated with an investigation, Kalshi said.
What they're saying: "This was a mistake, and I apologize," Klein said. "My experience, like many other Minnesotans, points to the need for clearer rules and regulations for these types of markets."
- Klein faces state Rep. Kaela Berg and former state Sen. Matt Little in the 2nd Congressional District primary.
- Little, who says he does not have a Kalshi account, told Axios that the incident "highlights the need to regulate these markets to stop manipulation and insider trading."
What we're hearing: Minnesota Senate Majority Leader Erin Murphy said she is glad Klein "recognized his mistake and has resolved the issue."
The big picture: Klein's trade was one of three enforcement actions related to political insider trading disclosed by Kalshi on Wednesday.
- The other cases were related to a Republican congressional primary in Texas and a Democratic U.S. Senate primary in Virginia.
What we're watching: Whether Minnesota's prediction market legislation moves forward before the Legislature adjourns in late May.
- Murphy said she supports "taking these unregulated and pernicious products off the market this session."