The following article by Stuart Rothenberg was posted on the Roll Call website July 24, 2018:
From Fox News to NBC News & the Wall Street Journal, the numbers aren’t good for GOP
Analysis — If you trust the July 9-11 Fox News poll and the July 15-18 NBC News/Wall Street Journal survey — and I have no reason not to — the GOP still looks headed for a difficult election and the likely loss of the House.
No, President Donald Trump’s voters are not fleeing him, and his personal poll numbers have not cratered even after his behavior at the NATO summit in Belgium and his Helsinki meeting with Vladimir Putin. So, maybe he really could shoot someone on Fifth Avenue and not lose any voters. But that says something about Trump’s supporters, not the overall electorate.
Unfortunately for Republicans, the combination of national and state polling continues to show the party’s vulnerability as November approaches.