Graham Platner has been scandal-prone, but is polling ahead of five-term incumbent Sen. Susan Collins (R-ME) in Maine.

The Democrats' hopes in November hinge on the scandal-plagued Senate candidate

Graham Platner has been scandal-prone, but is polling ahead of five-term incumbent Sen. Susan Collins (R-ME) in Maine.

Auchincloss's decision to weigh in on the Maine ballot and buck Platner, his party's own nominee, is noteworthy to watch in the swing state.

Progressives outraged as Dem Rep. Auchincloss suggests opposing presumptive Democratic candidate Platner in Maine Senate race. Auchincloss criticized Platner's Nazi tattoo, but…

Auchincloss dug his heels in to oppose Planter's bid, saying if it were him, "I'd vote for someone else in the Maine Democratic primary."