Democratic U.S. Senate candidate Graham Platner recently argued his party should have applied more pressure to holdouts who sank key parts of former President Joe Biden’s agenda. The progressive oyster farmer from Sullivan has come from nowhere to be a potent candidate in a primary with Gov. Janet Mills, who is backed by Senate Minority Leader Chuck Schumer, D-New York. The primary is putting stark Democratic divides on display. It holds big stakes with the winner entering a major 2026 race with Republican Sen. Susan Collins. The Bangor Daily News obtained audio of Platner’s remarks at a party event this...