Voter turnout in the 2026 House elections shows closely matched probabilities across the 125-130 million and 130 million-plus ranges, reflecting uncertainty over national engagement levels six months before November. This tight positioning arises from mixed early signals, including Democratic leads in generic congressional ballot surveys and variable primary participation across states, set against Republican mobilization around economic conditions and border security. Redistricting adjustments in multiple states, candidate quality in competitive districts, and differing party outreach to key voting blocs such as independents and younger voters continue to shape expectations. Any shifts in presidential approval ratings, major legislative actions, or new polling on voter enthusiasm before the fall could create clearer separation among the leading outcome bins.