**Trader consensus centers on moderate turnout between 4M and 4.5M votes for the November 3, 2026, Illinois U.S. Senate race.** The contest features Democrat Juliana Stratton against Republican Don Tracy in an open seat vacated by retiring Sen. Dick Durbin. Forecasters rate it Solid Democratic with a projected margin near 20 points, which historically limits crossover interest and Republican mobilization in a state that has not elected a GOP senator since 2010. Democratic primary participation reached roughly 1.28 million ballots—nearly 50% above 2022 levels—signaling stronger base engagement tied to national dynamics, yet the general-election campaign has remained low-key with minimal outside spending or high-profile events in recent weeks. Structural factors such as early voting access, no-excuse mail ballots, and typical midterm drop-off from presidential-year participation further anchor expectations around recent off-year benchmarks, while any late surge in get-out-the-vote efforts or shifts in national sentiment could nudge totals toward the upper or lower end of the leading ranges.