Michigan Democratic Sen. Gary Peters will not run for reelection, opening a key Senate seat in 2026 Sen. Gary Peters, D-Mich., speaks during the Senate Armed Services Committee confirmation hearing for Pete Hegseth, President-elect Donald Trump's choice to be Defense secretary, at the Capitol in Washington, Tuesday, Jan. 14, 2025. (AP Photo/Ben Curtis)
Ranking Member Gary Peters, D-Mich., speaks at the Senate Homeland Security and Governmental Affairs Committee confirmation hearing for South Dakota Gov. Kristi Noem, President-elect Donald Trump's nominee to be Secretary of Homeland Security, at the Capitol in Washington, Friday, Jan. 17, 2025. (AP Photo/Susan Walsh)
Sen. Gary Peters, D-Mich., speaks during the Senate Armed Services Committee confirmation hearing for Pete Hegseth, President-elect Donald Trump's choice to be Defense secretary, at the Capitol in Washington, Tuesday, Jan. 14, 2025. (AP Photo/Ben Curtis)
Sen. Gary Peters, D-Mich., speaks during the Senate Armed Services Committee confirmation hearing for Pete Hegseth, President-elect Donald Trump's choice to be Defense secretary, at the Capitol in Washington, Tuesday, Jan. 14, 2025. (AP Photo/Ben Curtis)
Ranking Member Gary Peters, D-Mich., speaks at the Senate Homeland Security and Governmental Affairs Committee confirmation hearing for South Dakota Gov. Kristi Noem, President-elect Donald Trump's nominee to be Secretary of Homeland Security, at the Capitol in Washington, Friday, Jan. 17, 2025. (AP Photo/Ben Curtis)
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Sen. Gary Peters, D-Mich., speaks during the Senate Armed Services Committee confirmation hearing for Pete Hegseth, President-elect Donald Trump's choice to be Defense secretary, at the Capitol in Washington, Tuesday, Jan. 14, 2025. (AP Photo/Ben Curtis)