I’m guessing you have a pretty good idea of what Graham Platner was getting up to last week—fending off yet another round of allegations about his character. But what about Susan Collins, Maine’s incumbent GOP senator and the person almost sure to be Platner’s opponent this November? You probably didn’t hear a word about her. The only significant news story of the week in which she figured (aside from being mentioned in all the Platner stories) is that she cast her 10,000th consecutive vote in