Douglas Rooks has been a Maine editor, columnist and reporter for 41 years. He welcomes comment at [email protected]. One thing is certain: Graham Platner sure gets under people’s skin. The embattled U.S. Senate candidate who’s now getting international attention was confronted over the weekend with stories about unseemly texts, adding to the virtual archive of dubious internet postings unearthed since last October, just as Gov. Janet Mills entered the race. The national Democrats who convinced Mills to run in the first place are now making clucking sounds concerning their hopes to “flip” — my least favorite political word — the Senate...