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.

President Donald Trump's approval rating has dropped to 37%, according to a new Gallup poll, the lowest mark of his second term.

Trump's support among Republicans remains strong, while Democrats continue to oppose him. Independents, who are up for grabs, have been turning away from him of late, according to polling data.