Democratic opposition energy fueled by President Trump’s approval ratings below 45 percent and a generic congressional ballot advantage for Democrats has combined with expanded mail and early voting access to elevate baseline participation expectations for the 2026 House elections. Republican get-out-the-vote operations targeting 2024 coalition voters, including new Hispanic and working-class supporters, alongside youth registration gains and the diploma divide’s turnout effects, add countervailing upward pressure while economic dissatisfaction and special-election overperformance by Democrats keep the overall picture fluid. With probabilities clustered tightly across the 115–130 million vote brackets and no single range exceeding 23 percent, traders reflect uncertainty over whether these cross-pressures will produce turnout near 2022 levels or push modestly higher in the final weeks before November 3.