No, Trump's support hasn't collapsed, but yes, he's increasingly alone: LA Times
http://www.latimes.com/politics/la-na-pol-trump-polls-20170820-story.html
In the annals of the modern presidency, few chief executives have been as alone as President Trump appears now shunned by major business leaders, at odds with his partys congressional leadership and deeply estranged from more than half the nation.
Polls taken in the past week, since Trump made comments that seemed to make excuses for neo-Nazi demonstrators in Charlottesville, Va., have shown the negative reaction.
But theyve demonstrated something else as well: Like other embattled presidents, including even Richard Nixon at the height of Watergate, Trump continues to hold the support of a hard core of determined backers.
They are not as numerous as the group that voted for Trump in November; their ranks have eroded steadily since he took office.
Trumps support, however, remains big enough to threaten Republican elected officials who might be tempted to openly break with the president. Potentially, it could also serve as a political base from which he could bounce back.
The latest evidence comes from three surveys done for NBC News that were released Sunday by the polling unit at Marist College in Poughkeepsie, N.Y. The surveys polled residents of the three states that put Trump over the top last year: Pennsylvania, Michigan and Wisconsin.
Several numbers in those surveys indicate trouble for Trump, but the most telling may be this: Among people who voted for him last year, 23% in Wisconsin, 19% in Pennsylvania and 16% in Michigan now do not approve of his performance in office, the polls found.
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An outstanding article describing Trumps support, polls that show that support is diminishing somewhat, and how Democrats could retake the House of Representative. In addition, the article discusses the threat that Trump could be to congressional candidates in key states..