The closely matched probabilities around 3.9M–4.3M total votes reflect uncertainty in North Carolina’s 2026 midterm Senate turnout amid a competitive open-seat race between Democrat Roy Cooper and Republican Michael Whatley. Both campaigns are emphasizing ground operations and voter mobilization, while recent registration data show strong growth among unaffiliated voters who could swing participation levels. Historical midterm patterns in the state, combined with early and absentee voting trends, continue to shape expectations, as does the economy’s prominence as a motivating issue across age groups. Developments that could widen the ranges include shifts in national or state momentum, intensified get-out-the-vote efforts in the final weeks, changes in registration or early voting numbers, or Election Day conditions that affect overall participation.