Democrats are well positioned to take back the House of Representatives this November, but the Senate is a whole other dogfight. In order to flip the upper chamber, Democrats will need to defeat entrenched incumbents, and win in states where they’re usually at a disadvantage. Virtually all roads to a Democratic Senate majority run through Maine. That means, as things currently stand, they desperately need a scandal-plagued oyster farmer named Graham Platner to win. Platner, the presumptive Democratic nominee for the seat, has been barnstorming Vacationland for months, and outstripping incumbent Republican Senator Susan Collins in the polls. But a...