Graham Platner wins Maine primary election: Results and key takeaways

Graham Platner, a veteran turned oyster farmer, won the Maine Democratic primary for the US Senate with about 72% of the vote, against Governor Janet Mills (20%) and David Costello. He advocates for government-funded healthcare, free education, and a wealth tax. Platner will face Republican Senator Susan Collins in November in a high-stakes race. Senate Democratic Leader Chuck Schumer endorsed Platner, hoping to capture the seat for Democrats.