Graham Platner maintains a commanding lead in the June 9 Democratic primary for Maine’s U.S. Senate seat, with recent surveys showing him above 75 percent against limited remaining opponents after Janet Mills suspended her campaign in April over fundraising shortfalls. Strong grassroots fundraising, endorsements including from Sen. Bernie Sanders, and his profile as a Marine veteran and oyster farmer have sustained momentum despite allegations of past misconduct and a controversial tattoo. Traders view these factors, combined with Platner’s public statements ruling out withdrawal and his shift toward general-election preparations against incumbent Susan Collins, as driving near-certain expectations he will remain on the ballot. A late major revelation or unforeseen personal development before polls close could still prompt reconsideration, though no such signals have emerged.