Maine has once again found a spotlight on late-night television. A leading Democratic U.S. Senate candidate’s controversial, now-deleted social media comments were featured on a segment of Comedy Central’s “The Daily Show” Tuesday night. Graham Platner has come under fire in recent weeks for his old Reddit comments about racism, sexual assault in the military and police officers. The Hancock County oyster farmer has apologized repeatedly for the posts, which included statements describing rural white Americans as racist, calling “all” police officers bastards and questioning why Black people don’t tip. Platner has said he made those comments when he was...