Graham Platner faces key test in Maine Senate primary

By The BriefBrief

Democratic Senate hopeful Graham Platner is poised to win a chance to challenge Susan Collins in Maine’s general election.

WHO: Graham Platner

WHAT: Platner is likely to win the Maine Democratic Senate primary, setting up a general-election challenge to Susan Collins.

WHEN: Jun 9, 2026 at 7:29 AM ET

WHERE: Maine, USA

WHY: The primary is expected to determine who will seek to unseat longtime Senator Susan Collins in the general election.

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