Prediction Markets and Election Integrity: The Risks of Misinformation and Insider Trading
Users on prediction markets like Kalshi claimed election fraud after Spencer Pratt fell behind in the Los Angeles mayoral primary. According to report details, some traders questioned mail-in ballots and the ballot count on social media, leading platforms to demand the removal of posts that violated guidelines.
Why did prediction market users claim fraud in the LA mayoral race?
Traders who bet on Spencer Pratt’s success began alleging voter fraud as the Republican fell behind in the primary. One Kalshi user claimed “California fraud” was occurring with mail-in ballots, while others on social media questioned if the state was “cheating” to remove Pratt.

Kalshi instructed influencers to delete these posts for violating company guidelines. Polymarket directed users to remove “paid partnership” labels from similar content.
How do prediction markets influence democratic processes?
Davina Hurt, director of government ethics at the Markkula Center for Applied Ethics at Santa Clara University, stated that elections are “not a game.” Hurt warned that if market probabilities influence donor decisions, media attention, or volunteer energy, the markets become a part of the election rather than just observers.
Assemblymember Maggy Krell (D-Sacramento) expressed concerns that these platforms could create a channel for “dark money” to flow into elections. Krell suggested that individuals could use sites like Kalshi to artificially elevate a candidate’s odds to impact the broader pool.
What are the risks of insider trading in political betting?
Lawmakers have raised alarms over the use of non-public information for profit. Reports indicate anonymous users earned $2.4 million from bets on the Iran war, and the Justice Department has investigated a former congressman for betting on himself.
Rep. Mike Levin (D-San Juan Capistrano) stated he does not trust these companies to self-regulate. Levin argued that the markets create “all the wrong incentives” for officials to abuse inside knowledge.
How are these platforms being regulated?
The Commodities Futures Trading Commission (CFTC) proposed a new framework last week to govern suspicious activity, including bets on wars. Commission Chair Mike Selig said the proposal aims to allow legitimate markets to move forward while increasing scrutiny.
Sen. Adam Schiff (D-Calif.) criticized the agency’s approach, claiming it lacks the leadership and staff to confront insider trading and misinformation. Meanwhile, the federal government has sued several states attempting to regulate these markets under state gambling laws.
What is the scale of betting on the LA mayor’s race?
Trading volume for a contract on the November L.A. mayoral winner reached more than $117 million as of Tuesday on Kalshi. Users trade “yes” or “no” contracts; for example, “yes” contracts for Mayor Karen Bass were selling at 63 cents, forecasting a 63% chance of her victory.
Koleman Strumpf, an economist at Wake Forest University, noted that prediction markets generally create more accurate forecasts than political polls. Strumpf stated there is currently no evidence that these markets have influenced an actual election outcome.
What may happen next with prediction markets?
Pressure for increased regulation is likely to mount, according to Aaron Klein of the Brookings Institution. A bipartisan group in Congress has introduced several bills to establish guardrails, though it remains unclear if any will pass this session.

The industry may continue to implement internal policies to prevent manipulation. Kalshi reported blocking over 100 potential insider trades in the first quarter of this year, and Polymarket has referred nearly 100 cases of suspicious activity to law enforcement.
Frequently Asked Questions
What are prediction markets?
They are online exchanges where users bet on the outcome of future events, such as elections or wars, making money if their prediction is correct and losing it if they are wrong.
How does a “yes” contract work on Kalshi?
A user purchases a contract on the prediction that a specific event will happen. If the prediction is correct, the user receives $1 per contract, creating a profit based on the initial purchase price.
What is the current status of federal regulation for these platforms?
The CFTC has proposed a new framework to govern the markets, while the House Oversight Committee has opened an investigation into potential insider trading.
Do you believe financial betting markets provide a more accurate picture of election outcomes than traditional polling?