Graham Platner tears into Republicans after clinching Susan Collins matchup in Maine, and other primary night takeaways

Graham Platner was all but certain to win Maine’s Democratic Senate primary on Tuesday.

But the progressive populist Platner was on course to earn about three-fourths of primary voters’ support — effectively ending any question about whether Maine Democrats wanted him to be their standard-bearer against Republican Sen. Susan Collins in one of the nation’s marquee races in November.