Breaking down Maine, South Carolina primary results: Despite a string of recently revealed controversies surrounding his past, Graham Platner won the Democratic primary for Maine's Senate seat on Tuesday night. He'll face off against incumbent Republican Sen. Susan Collins in November. CBS News political reporter Zak Hudak has more on this and South Carolina's gubernatorial primary results. #MainePrimary #SouthCarolinaPrimary #GrahamPlatner #SusanCollins #PoliticalNews