Prediction Markets Favor Democrats to Gain Control of Congress in Upcoming Midterm Elections

10/27/2026, 09:38 AM politics forecast

The upcoming midterm elections are critical, with the Republican Party aiming to maintain its majorities in both chambers of Congress. However, prediction markets, particularly on Kalshi, suggest a 63% probability that Democrats will take control of both the House and Senate.

These odds have remained stable since early October, reflecting a shift in sentiment as Democrats' chances have increased from under 50% earlier in the year, influenced by factors such as the U.S.-Iran war and rising gas prices.

In contrast, Republicans have just under a 10% chance of sweeping both chambers, while there is a 29% chance that Democrats will win the House but Republicans will retain the Senate. Notably, House Speaker Mike Johnson has expressed skepticism about the accuracy of polling data, which could indicate a disconnect between market predictions and on-the-ground realities.

The outcome of these elections could have significant implications for policy direction and investor sentiment, particularly in sectors sensitive to legislative changes

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