“I feel he’s done a marvelous job. I can’t stand his personality and behavior.”

But many have quietly struck a bargain with Mr. Trump: They will overlook his trampling of presidential norms because he is delivering just what they want on the economy, deregulation, immigration and foreign affairs.

“He’s tough, he’s a bully, but boy things are getting done,” said JD Kaplan, who runs a graphics business from his home on a neatly landscaped block in Dublin, an affluent suburb of Columbus. Mr. Kaplan, 63, who is a Republican activist, moved years ago from northeast Ohio’s struggling Rust Belt, where a younger brother still runs Kaplan Furniture, a store their grandfather founded.

“Whether it was Obama who started it or not, the economy’s better,” he said. “I see my brother’s businesses are doing better, my graphics business is doing better, my wife’s got a better job.’’