US 2026 Midterm Balance of Power

The US 2026 midterm balance of power concerns which party configuration emerges across the Senate and House. The reviewed aggregate Market frames the topic through control of both chambers, party-sweep outcomes, and an Other category. The supplied Market does not provide a detailed election calendar, decision procedure, or official resolution sources. It does establish a five-selection structure: Democrats Sweep, Republicans Sweep, D Senate with R House, R Senate with D House, and Other. These labels define the principal balance-of-power configurations represented in the available Market. For a prediction-market reader, this topic matters because control can be considered as a combined Senate-and-House outcome rather than as a single chamber result. The distinction between split control and a party sweep is central to interpreting the available landscape, while the Other selection provides a residual category for outcomes outside the four named party configurations. The available Market is therefore best read as a compact map of possible congressional control configurations for the 2026 midterms. Exact resolution rules and supporting sources are not included in the supplied record, so those details belong on the relevant Market page rather than in this evergreen topic brief.