JUANA SUMMERS, HOST:In Graham Platner, Maine Democrats thought they'd found a winning formula to bring working-class voters back into their coalition this election season. Maine Public's Steve Mistler has more on Troy Jackson, the logger turned progressive firebrand. (CHEERING)STEVE MISTLER, BYLINE: Nearly a year before Troy Jackson replaced Graham Platner on the ballot, he replaced him on the rally stage at an event in Portland. Like Platner, Jackson launched into a broadside against the political establishment. (SOUNDBITE OF ARCHIVED RECORDING)UNIDENTIFIED PERSON #2: Mainers just can't trust Troy Jackson on abortion.