2026 Senate Races
33 Class II The Senate is split into 3 classes. Each class comes up for election every 6 years. Class II is up in 2026. seats + 2 special elections Elections held to fill seats that were vacated early, like when a senator resigns to take another job. . Currently 53R - 47D.
Path to Majority
seats Dems need to flip
max seats GOP can lose
Toss-up Races
Maine
Incumbent: Susan Collins (R)
Blue-leaning state with a long-serving Republican incumbent. Collins won in 2020 but Maine has trended Democratic in recent presidential elections.
North Carolina
Open seat
Open seat in a purple state. Tillis retiring. Roy Cooper (D) is a popular former governor running against RNC Chairman Michael Whatley (R).
Georgia
Incumbent: Jon Ossoff (D)
Trump won Georgia in 2024 by a narrow margin. Ossoff won his 2021 special election by just 1.2 points.
Michigan
Open seat
Open seat in a battleground state. Peters retiring. Trump won Michigan narrowly in 2024. Three-way Democratic primary.
Competitive Races
Nebraska
Incumbent: Pete Ricketts
Deep red state but independent Dan Osborn came within 5 points of winning in 2024. Ricketts was appointed, not elected.
Iowa
Open seat
Open seat. Ernst retiring. Iowa was competitive as recently as 2020. Could attract strong candidates from both parties.
Ohio
Open seat (Special)
Special election after JD Vance resigned to become Vice President. Ohio has trended red but Democrats won a Senate seat here in 2018.
Special Elections
Ohio
Vacated by JD Vance (Vice President of the United States)
Special election after JD Vance resigned to become Vice President. Ohio has trended red but Democrats won a Senate seat here in 2018.
Florida
Vacated by Marco Rubio (Secretary of State)
Special election after Marco Rubio resigned to become Secretary of State. Florida has trended Republican in recent cycles.
Senate Retirements
All 33 Senate Seats Up in 2026
Every state below has a senator whose 6-year term ends in January 2027. Most of these races aren't expected to be close, but they'll still appear on your ballot if you live there.
Republican-held seats (20)
Democrat-held seats (13)
Plus 2 special elections in Ohio and Florida (Class III seats vacated early).