Maine Gov. Janet Mills to Challenge Susan Collins for Senate in 2026

The governor will challenge the incumbent Sen. Susan Collins (R-Maine) in the only state where the GOP must defend a seat Trump lost in 2024.

Gov. Janet Mills delivers her State of the State address in Augusta, Maine, on Jan. 30, 2024. Robert F. Bukaty/AP Photo

Maine Gov. Janet Mills, a Democrat, on Oct. 14 officially launched a U.S. Senate bid against Republican Susan Collins in next November’s elections.

Mills’s campaign had briefly posted, then deleted, a fundraising video and an ActBlue donation page on Oct. 10.