Popular Maine Gov. Janet Mills has become the latest Democrat to try to unseat Republican Sen. Susan Collins, who has held the seat for 28 years. The Associated Press Reports that Mills — a two-term governor who cannot run again — is the top choice of the national Democratic Party as it seeks to regain the Senate majority (Republicans now hold 53 seats). Citing anonymous sources, AP says Mills could officially announce her candidacy as early as tomorrow, Oct. 14. “Democrats see the Maine seat as especially important,” the article notes, “considering it is the only one on the 2026 Senate election calendar where Republicans are defending an incumbent in a state carried last year by Democratic presidential nominee Kamala Harris.”