LEWISTON, Maine — Remember Paul LePage? Sure you do. He’s the former governor of Maine who has called himself, accurately enough, “Donald Trump before Donald Trump” — a hot-headed, vulgar and sometimes erratic figure who regularly made international headlines for doing things like celebrating Martin Luther King Jr. Day by telling the NAACP to “kiss my butt,” rushing up to a television crew at the State House to volunteer that a state senator liked “to give it to the people without providing Vaseline,” and leaving an unhinged, obscenity-filled message for a Democratic legislator which he said he wanted recorded and...