Maine’s ethics watchdog decided not to pursue a late complaint against Maine Senate candidate Mike Tipping after determining the Orono Democrat had no role in an endorsement from his employer on Thursday. Tipping has long held a leadership position at the Maine’s People Alliance, an influential progressive group. He was accused earlier this month by an Old Town resident of violating the state’s campaign finance rules after the group paid for a postcard endorsing Tipping and reported it as an in-kind contribution from its political action committee. But four commissioners were unconvinced that Tipping collaborated with his employer after the candidate provided proof that he had taken steps to distance himself from the organization’s political activities following his fall declaration as a candidate.