On 4 November 2024, Polymarket’s displayed probabilities put Donald Trump ahead of Kamala Harris by approximately 57% to 43% in the US presidential election. The figures resembled polling percentages, though nobody had assembled a representative sample of voters. They came from contracts bought and sold by traders.

The distinction is easy to miss when a Polymarket figure appears in political or financial coverage. It shows where participants have placed their money at a particular moment. Federal Reserve decisions, inflation releases and election results can all be turned into contracts whose prices move as fresh information arrives.

Why A 58-Cent Contract Resembles A 58% Forecast

A Trump contract costing roughly 58 cents would return $1 if he won and nothing if he lost. Its price could consequently be read as the market assigning him about a 58% chance of victory. Nobody had to hold that position until election night. A trader who bought at 58 cents could sell later if the price reached 70 cents. Someone expecting a Trump defeat could take the other side. Each new order had the potential to move the percentage shown on screen.

Participating in that process requires more than simply reading the percentage on screen. New users also need to understand account eligibility, deposit requirements and any promotional conditions attached to registration. Covers’ guide to the current Polymarket promo code explains those practical details, including the available welcome offer and the steps required to qualify.

Those terms affect how someone joins and funds an account, but they do not change what the market price represents. The displayed probability still reflects the positions traders are willing to buy and sell at that moment.

The forecast is therefore not merely published as an opinion. It is packaged as an asset that can be bought, held and sold before the event is resolved. Traders can profit from correctly predicting the final result, but they can also trade changes in expectations along the way.

That makes the displayed probability different from fixed odds posted by a bookmaker. Buyers and sellers determine the price through the orders they are prepared to accept. If more participants attempt to buy “Yes” contracts at higher prices, the implied probability rises. Selling pressure can push it in the other direction.

The 2024 presidential race put this mechanism under an unusually bright spotlight. By the day before the election, approximately $3.1 billion had been traded across Polymarket’s presidential markets. That figure represented cumulative activity, including positions that might have changed hands repeatedly during the campaign. It was not $3.1 billion sitting on one final result.

Elections Show What A Market Price Can Measure

Polls, prediction markets and official results all produce percentages. They do not measure the same thing. Pollsters ask selected respondents how they intend to vote and use a stated methodology to estimate wider public opinion. Polymarket records the prices created by its traders. Election officials count ballots that have been cast and accepted.

Traders have money resting on their judgment, though the group placing those trades bears little resemblance to a representative polling sample. Participants may live outside the country, follow politics unusually closely, or focus on details they think the rest of the market has missed. Those with larger balances also have more capacity to influence the price.

A new poll might barely move a national polling average yet trigger a sharper response on Polymarket. Traders could interpret its findings as evidence about turnout in a decisive state rather than a nationwide shift. A campaign appearance or candidate withdrawal might change the price again within minutes. What moved was the judgment of active traders, not necessarily the intentions of millions of voters.

Timing matters too. Two prices taken from the same day may tell different stories if a new poll, court ruling, or campaign announcement appeared between them. A screenshot records one moment in the market. It does not show the orders available at other prices or explain why individual participants traded.

Weber County’s 2025 canvass produced a different kind of percentage. Its completed election count recorded 44,220 ballots from 116,769 registered voters, resulting in 38% turnout. Polymarket could estimate what traders expected voters to do. The canvass recorded what local voters had actually done.

One correct call says relatively little about the quality of a forecasting method. A candidate given a 60% chance is expected to lose four times out of 10. Calibration only becomes clearer when a large group of comparable forecasts is examined together.

Economic Markets Depend On The Small Print

An election generally produces a named winner. Economic questions are less tidy. Take a contract asking whether the Federal Reserve will cut interest rates. It needs to identify a particular meeting, define the size of any qualifying reduction and name the official source used for settlement. A cut announced after that meeting would not count, even if a casual reading of the headline suggested otherwise.

The contract may move whenever new economic evidence changes expectations. A weaker employment report, softer inflation reading or statement from a Federal Reserve official could increase the price of a “Yes” contract on a rate cut. Stronger data could push it down. Traders are not buying the economic announcement itself; they are trading their expectations about whether a precisely defined event will occur by the stated deadline.

Traders may therefore agree about the direction of monetary policy and still take different positions. One might expect a quarter-point cut at the next meeting. Another might anticipate that officials will wait until later in the year. The contract price reflects the deadline and conditions written into that particular question, not a general verdict on where rates are heading.

“Recession” presents another problem. One contract might use two consecutive quarters of declining gross domestic product. Another could depend on a declaration from the National Bureau of Economic Research. The tests are related, but they need not produce the same answer on the same date. Inflation figures carry their own distinctions. A contract might concern the Consumer Price Index or core inflation, with the change measured annually or from one month to the next. Traders are forecasting the defined release rather than households’ broader experience of rising prices.

A contract priced at 72 cents means little without the rules beneath it. The headline percentage attracts attention, but the settlement terms reveal the event on which money is actually resting.

Why Newsrooms Watch A Moving Probability

Prediction-market prices fit the pace of a breaking-news cycle. Polling averages wait for another survey. A traded probability may change moments after a debate, employment report, or central-bank announcement.

Politics accounted for 32% of Polymarket’s trading volume between July 2024 and April 2026. Elections are therefore a substantial part of its activity, though contracts also cover sports, economics and cryptocurrency.

After a debate or economic release, hundreds of individual trades may be compressed into one moving percentage. Reporters can see whether participants treated the news as consequential or brushed it aside. A sudden shift may also point them towards the announcement or new piece of evidence that prompted the trading.

The number still needs attribution and context. A price recorded at noon may already be outdated by publication and activity in a heavily traded presidential market cannot automatically be compared with a thinly traded local or economic contract. The price reflects the particular group with the money and access to trade.

Polymarket turns uncertain events into tradable forecasts by attaching a price to a clearly defined outcome. Election polls, inflation releases, debates and central-bank statements can all alter that price as traders revise their expectations.

The number on screen is not a poll, an official projection or a guarantee. It is the current price of a contract governed by specific settlement rules. Reading it properly therefore requires three questions: what outcome is being traded, what evidence has moved the market and exactly how will the contract be resolved?