2026 Midterms: Democrats Favored for the House, Senate a Toss-up

The 2026 congressional elections are the largest single category of prediction markets by volume. The headline narrative is a near-consensus expectation of a Democratic House takeover, with `CONTROLH-2026-D` trading at 84¢ on over 144,000 volume. This is a massive bet on a 'blue wave' six months out. However, the Senate picture is much more nuanced. `CONTROLS-2026-R` (Republicans win Senate) trades at 52¢, while `CONTROLS-2026-D` (Democrats win) is at 47¢, showing a virtual tie. This split is driven by the individual state races. `SENATEGA-26-D` (Democrats win Georgia) is priced at 92¢, suggesting a safe Democratic hold in a crucial swing state. Conversely, `SENATEFLS-26-R` (Republicans win Florida) is at 92¢, showing Republican strength in a state where they are also favored for the governorship (`GOVPARTYFL-26-R` at 81¢). The Michigan Senate race (`SENATEMI-26-D` at 62¢) is another key competitive seat favoring Democrats. The combination of a high-confidence House flip and a Senate coin-flip creates a unique risk environment. A divided government (D Senate, R House) is a distinct possibility. Traders can look at balance-of-power combos like `KXBALANCEPOWERCOMBO-` (e.g., D House + D Senate at 46¢) to bet on unified government scenarios. The primary season for 2026 is also heating up, with high-volume markets on specific primaries like the Alaska Senate race and the Florida gubernatorial contest.