Platner holds commanding lead over Mills in Maine Senate race: Poll

Progressive oyster farmer Graham Platner holds a commanding double-digit lead over Gov. Janet Mills (D) in the Democratic primary to take on Sen. Susan Collins (R-Maine), according to a new poll.  An Emerson College Polling survey released on Thursday showed Platner leading Mills by about 27 points in the Senate Democratic contest, with Platner receiving 55 percent…