2026 Midterm Elections: House Firmly Democratic, Senate Up for Grabs

The 2026 US midterm elections present a clear dichotomy: the House is seen as safe for Democrats, while the Senate is a pure toss-up. The market CONTROLH-2026-D ('Will Democrats win the House in 2026?') is trading at a robust 84¢, with an alternative market CONTROLH-2026-R pricing a GOP takeover at just 15¢ on 136,400 volume. This suggests the market sees a very low probability of a Republican House majority. In the Senate, the race is far tighter. CONTROLS-2026-R ('Will Republicans win the U.S. Senate in 2026?') sits at 51¢, while the Democratic counterpart is at 48¢. This razor-thin margin is driven by a handful of critical swing states. The Michigan Senate race is a key battleground: SENATEMI-26-R is at 36¢ vs SENATEMI-26-D at 63¢, indicating a Democratic lean. The Texas Senate race is a dead heat, with both parties at 50¢. In North Carolina, Republicans edge ahead at 9¢, but with the Democratic option not visible in the top markets, the race is highly competitive. The outcome of these few races will determine Senate control. Traders should also watch the Senate margin contracts. RSENATESEATS-27-E55 ('Will the Republican party hold exactly 55 Senate seats...') trades at 2¢, and RSENATESEATS-27-E56 at 1¢, indicating the market expects a very narrow majority for the winning party.