Graham Platner has officially won Maine's Democratic Senate primary, completing one of the most surprising and controversial political rises of the 2026 election cycle.

Controversies about his past dogged the Democrat on the eve of the primary. But he still has a great chance of defeating Susan Collins.

Maine reporter Billy Kobin says the Maine election will be a test of whether Maine voters want the low-key politics of Susan Collins or the anti-billionaire fervor of Graham…