Senator Bernie Sanders is set to campaign in Portland, Maine, over Labor Day weekend alongside Graham Platner, a new Democratic challenger in the Maine Senate race. Platner is running against incumbent Republican Senator Susan Collins and has positioned himself as a candidate focused on fighting for the working class and opposing the political establishment. Platner has expressed no confidence in Democratic leadership and has stated he will not support Senate Majority Leader Chuck Schumer. Recent internal polling from Platner's campaign shows him leading Collins by a substantial margin, with Platner at 48% and Collins at 32%. Meanwhile, Governor Janet Mills holds a narrower lead over Collins, with 43% to 42%. Platner's performance is being viewed as a potential indicator of the Democratic Party's prospects in reclaiming control of the Senate. Sanders described the upcoming rally as part of his "Fighting Oligarchy" tour, emphasizing support for candidates who advocate for an economy benefiting all Americans rather than billionaires.