Democrats flipped seven Republican-held Senate seats in the November 3, 2026 midterms, including gains in Iowa, Kansas, Maine, North Carolina, Ohio, South Carolina, and Texas. These results reduced the Republican total from a pre-election 53-47 majority to 44 seats, with two races still uncalled but insufficient to alter the outcome. The market's heavy weighting toward 44 reflects the confirmed vote counts and party-control projections from multiple outlets, while the slim probabilities for 45 or 46 seats account for any final certification adjustments in the remaining contests. Historical midterm patterns and the scale of the net Democratic pickup further anchor trader consensus around this figure.