Washington — Over a third of the Senate's seats are up for election in 2026, and until recently, Republicans appeared exceedingly confident about their prospects of remaining in control after the midterm elections this fall. While Republicans are defending more seats, many of them are in states that President Trump won by comfortable margins in the last election. With few opportunities for pickups and a handful of open seats to defend, the 2026 cycle has posed an uphill battle for Democrats.
Main Idea: CBS News says the fight for Senate control in 2026 will hinge on a small set of key races, including Susan Collins’s seat in Maine, while Democrats hope Sherrod Brown and Janet Mills can help them win back the chamber.
Key Points:
A close Senate fight could keep national policy in flux, leaving households and small businesses unsure about taxes, prices, and federal rules.
Voters in key states could use these races to shift Congress, which may change how quickly leaders address affordability, health care, and war-related spending.
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Central Democratic comeback candidate in Ohio and a major factor in control of the Senate.
Central Republican incumbent defending a key Senate seat in Maine.
Major Democratic primary candidate in the competitive Michigan Senate race.
Leading Democratic primary contender for the Maine Senate race.
Major Democratic primary contender and prominent challenger in the Maine Senate race.
Major Democratic primary candidate in the competitive Michigan Senate race.
Main Democratic challenger in Alaska’s Senate race.
Major Republican candidate in the Michigan Senate race and previous statewide nominee.
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Sign in to commentRepublican incumbent defending a vulnerable Alaska Senate seat.
His decision not to seek reelection created a major open-seat contest in Michigan.
Republican incumbent defending Ohio’s Senate seat after appointment to fill a vacancy.
Major Democratic primary candidate in the competitive Michigan Senate race.