Of the issues on which Americans evaluated President Trump for this poll, they give the president his most negative marks on his handling of the Russia matter — just 28 percent approve, while 63 percent disapprove. A third say the president’s approach to this issue has made them think worse of him.

Republicans approve of how Mr. Trump is handling the Russia issue, but in far lower numbers (at 57 percent) than their support for the job he’s doing on the issues of the economy (80 percent) and terrorism (77 percent).

Even as some in their ranks disapprove of how the President is handling the investigation, most Republicans don’t think the issue is serious.