Democrats enter the final month of the 2026 midterms with a sustained national advantage that has pushed trader consensus toward a blue wave outcome. Generic congressional ballot averages show Democrats ahead by 7–11 points among likely voters across multiple recent surveys, including Emerson, NYT/Siena, and PBS/Marist polling. This margin reflects broad dissatisfaction with President Trump’s job performance, which has reached record lows near 38% approval amid concerns over the economy, inflation, and foreign policy. Historical midterm patterns amplify the effect, as the president’s party typically loses seats when approval sits below 40%. Democrats need only a handful of net House gains to regain the majority despite Republican redistricting, while competitive Senate opportunities in states such as North Carolina, Maine, and Texas keep both chambers in play. These polling trends and structural headwinds underpin the elevated probability for Democratic control of Congress.