Maine Governor Janet Mills has officially announced her bid for the U.S. Senate, targeting incumbent Republican Senator Susan Collins in a crucial upcoming election. Mills’ entry into the crowded Democratic primary has shifted the race to a competitive toss-up, with polls indicating improved chances for Democrats to challenge Collins. The campaign is igniting debates within the party regarding age and electability, as Mills, at 77, faces scrutiny about her candidacy. Additionally, Mills plans to confront President Trump as part of her strategy, highlighting her commitment to serve only one term if elected. The dynamics of the race are further complicated by endorsements and shifts in support among Democratic candidates, reflecting ongoing tensions between establishment figures and grassroots activists in the party.