Here are some fun facts from the Brookings Institutution. Trump endorsed 75 candidates. Of those 75, 21 won.
Also, Trump actively campaigned for 35 House and Senate candidates. Of those, 20 won.
And before I go, please let me direct your attention to Matthew Yglesias, Trump voters stood by Trump in the midterms—but there just aren’t enough of them. Yglesias’s views are broadly similar to mine, as set forth in the immediately preceding post.
It’s not rocket science, folks. When you start out with a minority of the electorate, alienate some of those, and alienate everyone else, this is not a formula for winning elections.