Senate control hinges on seven tight states as polls close Tuesday night

Vote counting begins Tuesday night, November 1, 2026, with results potentially extending for days or weeks. Control of the House is expected to become clear sooner because margins are larger in most districts. Control of the Senate will likely take longer, as seven states remain highly competitive. Two states use ranked-choice voting, a process that can prolong counting time. A single seat could determine the balance of power in the Senate.

Georgia and South Carolina cast the first major shadows on the Senate race. In Georgia, Democratic Senator Jon Ossoff holds a likely advantage over Republican Representative Mike Collins. The gubernatorial race is tighter, pitting billionaire Rick Jackson against former Atlanta Mayor Keisha Lance Bottoms. Georgia Secretary of State Brad Raffensperger noted that new laws require counties to report results within one hour of polls closing. In South Carolina, the Senate contest between appointed Senator Darline Graham and Democrat Annie Andrews is a toss-up in national polls, though the Cook Political Report gives Republicans the advantage.

North Carolina and Ohio present critical challenges for both parties. North Carolina’s Senate seat is the most likely Democratic flip, pitting former Governor Roy Cooper against former RNC Chairman Michael Whatley. Democrats have not won a Senate race there since 2008. In Ohio, Republican Senator Jon Husted and former Senator Sherrod Brown are deadlocked. The governor’s race features Democrat Amy Acton leading in polls against Republican Vivek Ramaswamy, whose recent ad campaign targeting Acton’s estranged mother has drawn backlash that may affect both candidates.

At 8 p.m. ET, polls close in more than half the country. Maine stands out as a target for Democrats, who aim to unseat Republican Senator Susan Collins. This is the only state Kamala Harris won in 2024 where Republicans hold a Senate seat. In Florida, Republican Representative Byron Donalds holds a slight lead over Democrat David Jolly for governor. The state’s redrawn congressional map faces its first test, with seven competitive House seats and two toss-ups according to the Cook Political Report.

Pennsylvania offers Democrats a potential breakout night. Three previously toss-up House races now lean Democratic, with one remaining a toss-up. In New Hampshire, the gap between Democrat Chris Pappas and former Republican Senator John Sununu has widened in favor of Pappas.

At 9 p.m. ET, polls close in over 80 percent of states. Attention shifts to Iowa, Kansas, Michigan, and Texas. In Texas, Democrat James Talarico could take an early lead against Republican Ken Paxton due to mail-in ballot counts, though Paxton may gain ground as counties report. Kansas Senator Roger Marshall faces a tight challenge from Democrat Adam Hamilton. In Iowa, Republican Representative Ashley Hinson trails Democrat Josh Turek slightly, while state auditor Rob Sand favors Democrats for governor. In Michigan, the toss-up between Abdul El-Sayed and Mike Rogers will determine if the progressive wing secures a major victory.

Later closures in the Mountain West and Pacific Northwest could produce surprises. Montana’s first congressional district is a toss-up between Democrat Sam Forstag and Republican Aaron Flint. Nevada Governor Joe Lombardo faces a toss-up challenge from Democrat Aaron Ford. California’s new congressional map, approved by voters in 2025, has tilted close races toward Democrats in the final weeks.