PORTLAND, Maine — Democrats in Maine intensified efforts to choose a new U.S. Senate nominee after the withdrawal of Graham Platner, as party leaders and candidates sought to unify ahead of a closely watched race against Republican Senator Susan Collins that could influence control of the Senate after the November elections.
Platner stepped aside following a sexual assault allegation that he has denied, prompting the Maine Democratic Party to organize a convention to select a replacement under state election rules. Party officials have said delegates will vote on a new nominee before the state's filing deadline.
The contest to replace Platner has drawn a crowded field that includes Maine Secretary of State Shenna Bellows, former state Senate President Troy Jackson, former state health official Nirav Shah and Jordan Wood, among others. Candidates have moved quickly to organize campaigns, secure endorsements and appeal to delegates with only a short window before the party's nominating convention.
During a televised debate on Thursday, leading contenders focused much of their criticism on Collins and President Donald Trump rather than attacking one another, reflecting the party's effort to preserve unity after weeks of political turmoil. Candidates argued that defeating Collins would be critical to expanding Democratic representation in the Senate, while also presenting differing arguments about who would be the strongest general-election nominee.
The race has taken on national significance because Maine is regarded by both parties as one of the most competitive Senate contests of the 2026 midterm cycle. Democratic strategists view the seat as a key opportunity to gain ground in the chamber, while Republicans have defended Collins as an experienced incumbent with a record of bipartisan work.
The abrupt change in the Democratic field has also required campaigns to meet accelerated organizational deadlines, including collecting signatures and mobilizing volunteers before delegates gather to make their selection. Party officials have said the replacement process is intended to ensure voters have a Democratic nominee on the November ballot despite Platner's departure.
The Maine Democratic Party is scheduled to hold its nominating convention on July 25, where delegates will choose the party's Senate nominee to face Collins in November, marking the next confirmed step in the replacement process.
