After days of posting multiple apology videos, showing off his chest to reveal a covered up tattoo that had been connected with a Nazi symbol and distancing himself from old online comments, Maine Democrat Graham Platner says he's only further committed to his U.S. Senate campaign.

Platner, an oyster farmer and first-time political candidate, is vying to flip a Senate seat that has been held by Republican Susan Collins for nearly 30 years. However, he must first clear a competitive primary, which includes facing Democratic Gov. Janet Mills.

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Platner, 41, made a splashy jump into the senate race in August as a progressive candidate. But it wasn't until after Mills, 77, jumped in the race that news outlets began r

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