Maines two-term Democratic Gov. Janet Mills announced Tuesday she will run for her states U.S. Senate seat in 2026 in a bid to unseat five-term incumbent Sen. Susan Collins.

The race could be one of the most closely watched and hotly contested in the country as Republicans work to hold onto their majority in the Senate. Thirty-three seats are up for grabs in 2026, 20 of them held by Republicans. Of those 20, Maine is the only GOP-held Senate seat in a state that former President Donald Trump did not win in 2024. Democrats need to gain four seats to take the majority.

Even with Republicans defending 20 seats next year, and with the historical trend of the party not in power often performing better in midterms, Democrats still face long odds of reclaiming the Senate. But Maines Senate seat

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