Democratic U.S. Sen. Gary Peters, of Michigan, announced Tuesday that he will not run for a third six-year term in 2026 leaving an open Senate seat.

Democratic Sen. Gary Peters won’t run for re-election in Michigan in 2026, creating a pivotal open Senate seat in one of the most tightly divided battleground states in the U.S.

Washington ― Gary Peters, Michigan’s senior senator and a former congressman, said he won’t seek reelection next year and will retire from the U.S. Senate when his second term ends in January 2027.