Cook PVI
R+1
Last Margin
1.7%
Seat Class
Class 2
Candidates
Haley Stevens
US Senate
A Detroit-area congresswoman who built her profile on manufacturing and the auto industry is running to fill Gary Peters's seat in a race Michigan Democrats cannot afford to lose.
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Michigan Senate — Open Seat
US Senate
Michigan's open Senate seat is the most vulnerable Democratic pickup opportunity on the 2026 map — an open seat in a state Trump nearly flipped in 2024.
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Coverage
2026-03-26Michigan's Senate Primary Just Got Picked Apart by the Party's Two Wings
In eight days, Warren backed McMorrow and ModSquad backed Stevens. The Michigan primary is now an open proxy war for the soul of the Democratic Party.
The Iran War Splits Michigan's Democratic Primary Wide Open
El-Sayed's Hasan Piker rallies drew national backlash and a direct rebuke from McMorrow — now the same conflict Sen. Slotkin says is costing Michigan drivers 60 cents a gallon is becoming the race's live wire.
Michigan's Open Senate Seat Is Already a War
Gary Peters is retiring, the NRSC is already spending, and Michigan just flipped to Trump. The most competitive open Senate seat in the country has no candidates yet.
The Establishment Picks a Side in Michigan — and It Immediately Gets Messy
ModSquad's endorsement of Haley Stevens on Friday crystallized the Michigan Senate primary's fault lines — and a blown-up Axios correction made it bigger news than it might have been.
The 2026 Senate Map Was Always Going to Be This Bad for Democrats
Democrats are defending Georgia, Michigan, New Hampshire, and Minnesota — a class of senators elected in the chaos of 2020 who now face a fundamentally different electorate.