Overview of One Thing Midterms by CNN Podcasts
This episode examines how prediction markets — platforms where users can bet on political and other outcomes — are becoming a bigger force in U.S. elections, especially ahead of the midterms. CNN senior reporter Marshall Cohen explains that while traders and some campaigns see these markets as useful signals and a new way to engage with politics, election officials worry they may spread misinformation, discourage turnout, and enable insider trading or market manipulation.
What Prediction Markets Are
Prediction markets let people trade on the likelihood of future events, from elections to sports and entertainment outcomes.
Why they’ve become more visible
- These markets have exploded in popularity and are now heavily advertised.
- Platforms like Kalshi and Polymarket are increasingly mainstream.
- Some users, especially younger traders, are reportedly making large profits.
Why people are using them
- Traders like the combination of politics and financial speculation.
- Campaign operatives, donors, and politically engaged observers are watching them as another data point in races.
Why Election Officials Are Worried
Election officials interviewed for the story say prediction markets create new risks for democracy and election administration.
Main concerns
- Disinformation: Market odds can be mistaken for certainty.
- Voter suppression: If a candidate seems to have no chance, some voters may stay home.
- Confusion: Election odds can be misunderstood in the same way people sometimes misread polling.
- Insider trading / manipulation: Candidates or insiders may use privileged information to profit.
A concrete example
- In Wisconsin, Francesca Hong was shown at about a 95% chance to win in a prediction market, but she still lost — a reminder that high odds are not guarantees.
- Cohen notes that a similar dynamic helped fuel disinformation around the Los Angeles mayoral race.
Insider Trading and Candidate Betting
The episode highlights several cases where candidates or campaign-connected people bet on their own races.
Why this matters
- Betting on your own race can be a conflict of interest.
- Betting against yourself or timing bets around endorsements or campaign news could amount to manipulation.
- These actions may violate platform rules and potentially break the law.
Platform enforcement
- Kalshi and Polymarket say they actively monitor for suspicious activity.
- Kalshi says it reviews public FEC filings and campaign finance records to identify staff and other insiders who should be blocked from trading on certain markets.
How Campaigns and Donors Are Responding
Campaigns are paying attention, even if they don’t fully trust the odds.
What operatives are doing
- Monitoring market movements as part of race analysis.
- Watching how live odds influence donor behavior.
- Trying to prevent donors or mega-donors from making decisions based solely on betting markets.
Broader campaign impact
- Some candidates reportedly check their odds constantly.
- The markets are now part of the political environment, even if they are not the whole picture.
What the Companies Argue
Prediction market companies push back strongly against the criticism.
Their defense
- They say the platforms can increase political engagement and even turnout.
- They argue users become more informed about elections and public sentiment.
- They frame the markets as useful tools for understanding the electorate, not just gambling devices.
Their broader pitch
- Prediction markets are presented as one more source of information for analyzing elections.
- CNN itself uses Kalshi data in reporting, though editorial staff are not allowed to trade on the platform.
Key Takeaway
Prediction markets are becoming a real part of the political ecosystem, but they remain controversial. Supporters view them as informative and engaging; critics see a system that can distort public perception, invite unethical behavior, and add pressure to already fragile election processes. The episode suggests they should be treated as one signal among many, not as a reliable forecast of election outcomes.
Notable Insight
“These markets are yet another input… but it is not the whole picture by any stretch.”
That’s the core message of the episode: prediction markets can be useful, but they are not gospel.