Sen. Gary Peters (D-Mich.) will not seek reelection in 2026, he told The Detroit News, leaving an open seat in the swing state as Democrats already face a tough road to reclaim the majority.

Both parties will be in a mad dash to find candidates for the seat, which is expected to be competitive after President Donald Trump carried the state by 1.4 percentage points in 2024.

Peters, who was first elected in 2014, won by just under two points in 2020 and served as chair of the Senate Homeland Security Committee when Democrats had control of the chamber.