Maine Democratic Senate candidate Graham Platner has lost another top campaign official after a series of controversies centering around old social media comments and an alleged Nazi-linked tattoo derailed his campaign’s momentum.

Ronald Holmes, Platner’s national finance director, resigned from his position on the campaign “effective immediately” Friday in an announcement posted to LinkedIn.

“I joined this campaign because I believed in building something different — a campaign of fresh energy, integrity, and reform-minded thinking in a political system that often resists exactly those things,” Holmes said.

But he wrote that “somewhere along the way,” he began to feel his “professional standards” no longer “fully aligned” with those of Platner’s campaign.

“I’m........

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