Maine Senate candidate Graham Platner said a string of controversies have only “strengthened” his campaign. Platner’s comments to NBC News come on the heels of the resignations of his national finance director Ronald Holmes III and his campaign manager and longtime friend Kevin Brown last week. Holmes said he resigned Friday because he feels his “professional standards” are “no longer fully aligned with those” of Platner’s campaign. Brown resigned days into his role after learning he has a baby on the way. “It is amusing for me to watch the campaign described in the media as collapsing or falling apart...