What Congressmen are done for because of Trump?

[Mr. Morden]

Are some types of districts more likely to hurt Trump specifically, but have less of an impact downballot?  For example, if part of the reason why Mormons don't like Trump is because of his personal style, then they may be more likely to ticket split, and still vote GOP downballot.  Whereas in districts with Hispanics, if Trump on the ballot causes a bunch of new voters to register and show up at the polls for the first time, that's going to help the Dems downballot as well.

There's also the fact that in "disgruntled Republican districts", the potential entry of a 3rd party conservative candidate could save the GOP from disaster downballot.  Whereas, again, in a district where Trump energizes Democratic voters or encourages new registrations, that's not going to help.