U.S. Senate Races
Class 2 senators face voters in 2026. Democrats are defending more seats but Republicans hold structural disadvantages in several key states. Democrats need a net gain of 4 seats to retake the majority.
Sen. Jeanne Shaheen (D) announced retirement in 2025, leaving this seat open — the most competitive in the cycle.
Chris Pappas (D)
Former U.S. Rep, expected
Kelly Ayotte (R)
Former Senator, expected
A purple state that has trended competitive in recent cycles. The open seat makes this the #1 pickup opportunity for Republicans.
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Jon Ossoff INCUMBENT (D) won in 2021 runoff by 1.2%. Republicans are targeting heavily.
Jon Ossoff (D)
Incumbent Senator
R challenger TBD
Filing opens early 2026
Georgia has become a true battleground. Ossoff faces headwinds in a state that favored Trump by a wider margin in 2024.
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Susan Collins INCUMBENT (R) is one of the most durable Republicans in a blue-leaning state.
Susan Collins (R)
Incumbent, seeking 5th term
D challenger TBD
Filing opens 2026
Collins has won in tough cycles before (2020 was her closest call). Democrats will need a strong recruit to compete here.
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Sen. Gary Peters (D) is retiring, leaving this seat open. Mallory McMorrow suspended her primary campaign on July 5, 2026, narrowing the Democratic field to two ahead of the Aug. 4 primary.
Haley Stevens (D)
U.S. Rep, Aug. 4 primary
Abdul El-Sayed (D)
Former Detroit health director, Aug. 4 primary
Mike Rogers (R)
Former U.S. Rep, expected nominee
Michigan's open Senate seat is a must-hold for Democrats and a top Republican target after Trump won the state in 2024. Note: McMorrow's name may still appear on primary ballots printed before her withdrawal.
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Thom Tillis INCUMBENT (R) narrowly won re-election in 2020 by 1.7 points.
Thom Tillis (R)
Incumbent Senator
D challenger TBD
Filing opens 2026
Tillis has faced intra-party challenges before. North Carolina has been trending Republican in statewide races recently.
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Chuck Grassley INCUMBENT (R) — at 92, a decision on whether to run again shapes this race entirely.
Chuck Grassley (R)
Incumbent or potential open seat
D challenger TBD
Filing opens 2026
If Grassley retires, this open seat becomes more competitive. Iowa has moved strongly Republican in recent cycles.
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Michael Bennet INCUMBENT (D) won comfortably in 2022 by 14 points.
Michael Bennet (D)
Incumbent Senator
R challenger TBD
Filing opens 2026
Colorado has trended blue at the federal level, but Republicans will target Bennet if conditions are favorable.
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Tina Smith INCUMBENT (D) won re-election in 2020 by 5.3 points over a well-funded Republican challenger.
Tina Smith (D)
Incumbent Senator
R challenger TBD
Filing opens 2026
Minnesota has been reliably blue federally. Republicans see an opportunity in a changing political environment.
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