US Elections Prediction Markets

Election markets are some of the most actively traded prediction markets anywhere, and US races draw heavy attention well before any votes are counted. From primaries and individual contests to control of the House and Senate, platforms price each outcome continuously as polls, fundraising, and events shift the landscape. MassPredict gathers live US election odds from Polymarket, Kalshi, ForecastEx and more into one view.

The spread between platforms is especially revealing in politics, where different trader pools can read the same race very differently. When one platform prices a contest as a toss-up and another leans clearly one way, that divergence tells you the outcome is genuinely uncertain. You compare the prices directly and draw your own conclusions.

Coverage spans races, primaries, control of Congress, and election-night outcomes. MassPredict lines the platforms up side by side and leaves the interpretation to you.

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63 active markets · ranked by volume

US Elections prediction markets — FAQ

How do election prediction markets work?

Traders buy and sell shares tied to a candidate or party winning, and the price reflects the market's implied probability of that result. Prices update continuously as new information arrives.

Are prediction markets more accurate than polls?

They aggregate money-backed opinions rather than survey responses, which can capture sentiment differently from polling. Neither is a guarantee, and prediction markets are informational only, not advice.

Why do election odds differ across prediction platforms?

Separate trader bases, liquidity, and risk appetite produce different prices for the same race. Comparing platforms shows where the market genuinely disagrees about an outcome.

When do US election markets resolve?

They resolve once the race is called against the market's stated criteria, typically after results are official or projected per its rules. Always check the specific resolution terms.

What does a 52% price mean in an election market?

It reflects a roughly 52% implied chance that the named candidate or party wins, a near toss-up. It is a live market read, not a prediction of the final result.