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Prediction Markets Could Make Polling Less Important

For decades, political polling has been one of the primary ways Americans have followed elections. A new poll comes out showing a candidate up two points, another shows the race tied, and suddenly a new round of headlines tries to explain what changed. Prediction markets could eventually make that cycle…

Caleb Tallman
Caleb Tallman Editor in chief
09/25/2026
Prediction Markets Could Make Polling Less Important

For decades, political polling has been one of the primary ways Americans have followed elections. A new poll comes out showing a candidate up two points, another shows the race tied, and suddenly a new round of headlines tries to explain what changed. Prediction markets could eventually make that cycle much less important.

That does not mean polling is going away. Polls provide information that prediction markets cannot. They can tell us what voters think about individual issues, how different demographic groups are leaning, and why public opinion may be changing.

But when the question is simply "Who is going to win?", prediction markets offer something fundamentally different. A poll captures the opinions of a sample of voters at a particular moment. A prediction market asks traders to price what they believe will actually happen. That distinction matters.

Polls Measure Opinion, Markets Forecast Outcomes

One of the biggest mistakes in election coverage is treating a poll like a forecast. If a poll shows Candidate A at 48% and Candidate B at 46%, it doesn't necessarily mean Candidate A has a 52% chance of winning. It means that particular survey found a two-point difference among the people it sampled, subject to its methodology and uncertainty.

Prediction markets answer a different question. A contract trading at 62 cents effectively reflects a market-implied probability of roughly 62% that the specified outcome will occur. And traders can consider far more than polling.

They can weigh polling averages, turnout expectations, economic data, fundraising, candidate news, historical voting patterns, demographic changes, and virtually any other information they believe matters. Then they have to decide whether the current market price is wrong. That financial incentive is one reason prediction markets can be powerful information-aggregation tools.

There Is Evidence Markets Can Beat Individual Polls

Prediction markets forecasting elections aren't new. The University of Iowa's Iowa Electronic Markets have operated election markets since 1988. One major study compared IEM forecasts with 964 polls across five presidential elections and found that the market was closer to the eventual two-party vote result 74% of the time. The advantage was particularly pronounced more than 100 days before Election Day.

Earlier Iowa research also found an average polling error of 1.91% across the elections it examined, compared with 1.49% using election-eve market prices. That doesn't establish that prediction markets will always outperform modern polling models. Research comparing the two has found a more complicated picture, including evidence that polls can perform well on bias while prediction markets perform well on precision.

But it demonstrates something important: markets deserve to be treated as a serious forecasting tool rather than a novelty sitting beside the polls.

The Market Can Become the Headline

This is where I think election coverage could change dramatically. Imagine a major presidential debate. Today, the immediate reaction includes pundits declaring a winner, instant polls, focus groups, and days of discussion about whether the debate moved voters.

Prediction markets can react almost immediately. If a candidate's probability moves from 52% before the debate to 59% afterward, that's a simple and understandable signal of how traders collectively interpreted the event.

The same thing can happen after an economic report, court ruling, endorsement, scandal, or primary result. Markets continuously absorb new information. A poll cannot do that. Someone has to commission it, conduct it, weight it, analyze it, and publish it.

Polls Could Become an Input Instead of the Product

There is an important catch. Prediction markets don't exist independently of polling. Traders read polls. Algorithms can react to them. A surprising poll can immediately move a political contract.

In fact, research on historical election markets has argued that when both polls and markets were available, market prices didn't necessarily add predictive information beyond polling. That actually points toward what I think the future looks like.

Polling doesn't disappear. Its role changes.

Instead of everyone obsessing over whether one poll puts a candidate ahead by two points, that poll becomes another piece of information incorporated into a much larger market. The poll remains valuable. The market becomes the aggregation layer.

Prediction Markets Have Their Own Problems

Prediction markets aren't perfect either. Markets can suffer from low liquidity, inexperienced traders, temporary price distortions, and differences in contract rules. A market price is not a scientific measurement of public opinion.

Traders also don't represent the electorate. That's an important distinction. A political prediction market can tell us what traders collectively believe is likely to happen. It cannot tell us what the average American believes about immigration, inflation, or a candidate's job performance.

Evidence also shows that combining different forecasting methods can produce better results than relying on any one method alone. Research on election forecasting has found meaningful error reductions from combining forecasts. So this shouldn't become a debate about eliminating polling.

A Different Way to Follow Elections

Political polling isn't going anywhere. But its position at the center of election forecasting may be less secure than it once was. As prediction markets grow, become more liquid and attract more sophisticated participants, Americans will increasingly have another number to look at.

Not simply:

Who is ahead in the latest poll?

But:

What probability is the market assigning to them actually winning?

Pollsters will still provide valuable information. Journalists will still report their findings. Campaigns will still obsess over the numbers. But prediction markets can take those polls, combine them with thousands of other pieces of information, and continuously produce something polls were never really designed to provide:

A real-time price on what is actually going to happen.

And eventually, that may be the number people care about most.