Mills exits Maine Senate race as Platner surges to the lead

Gov. Janet Mills abruptly dropped out of the Democratic U.S. Senate primary against Susan Collins after a late entry, fundraising shortfalls and a divided caucus left her with limited momentum and resources. Political newcomer Graham Platner capitalized on Mills’ missteps, campaigned across the state, and maintained a polling lead even as Mills halted advertising. National donors and the party offered little help, while Republicans framed Platner as Collins’ stronger general-election foe. Mills’ exit signals a historic shift in Maine politics and echoes past upsets in the state.