One of the few areas where Trump has seen relative strength is immigration. In July, 47 percent of working-class voters said they approve of his handling of immigration, while 45 percent disapprove — a sharp improvement from June, when he had a 39 percent approval to 55 percent disapproval split. May's numbers were evenly divided at 45 percent.

Marquette Law School Poll reveals partisan divide over Trump's agenda, with Americans concerned about deficit increases and deportations.