The tight contest between Democrat Abdul El-Sayed and Republican Mike Rogers in Michigan’s open Senate seat drives trader expectations toward moderate turnout near 4.6-4.8 million total votes. A competitive Democratic primary that exceeded 2.5 million ballots, combined with recent polling showing narrow margins and elevated enthusiasm on both sides, supports this clustering. Expanded early and mail voting options, aggressive get-out-the-vote efforts including millions of door knocks, and high-profile rallies by national figures in the final week add upward pressure without clear signals for record highs. Economic concerns tied to manufacturing and tariffs further motivate participation among key blocs. The wide spread across adjacent ranges reflects uncertainty over last-minute shifts in infrequent voter mobilization and any late national momentum changes before November 3.