Thanks for the link; it provided good and useful information.
I spent some time thinking about the significance of vote-switching. There can be no doubt that the Sanders vote-switchers bear some responsibility for the evils that Mr. Trump has visited upon the world. By the same reasoning, the Clinton vote-switchers did not cause any evil to be visited upon the world. The best comparison I can draw here is to the difference between attempted murder and actual murder. Joe plans to murder Mary; he gets a gun and shoots her and she dies. That’s murder. Jane plans to murder Fred; she gets a gun and shoots at Fred and misses. Both people have done terrible things, and both deserve punishment. But Joe’s crime is greater than Jane’s, because he inflicted actual injury.
The most fundamental consideration is that every person who voted for Mr. Trump deserves full blame for every evil action he has undertaken. Every person who merely did not vote for Ms. Clinton deserves half-blame for every evil Mr. Trump has undertaken.