Many republican's, in and outside of elected officials, have distanced themselves from Trump.   I think the division he writes about is the critical issue for our country.  This article points out that many have a vested interest in this division.  The article points out that the 40% of the population that occupies the middle aren't heard.

http://durangoherald.co.newsmemory.com/publink.php?shareid=4c91525c7

Ironically, the people who are most politically engaged – the people who consider themselves most morally “responsible” – pose the greatest threat to the political system, weakening its ability to compromise and condemning it to paralysis. The fringes of both parties have acquired political power, and to some extent, disenfranchised the larger and ideologically messier middle.

Donald Trump HAS redefined the Republican Party, and many #NeverTrump Republicans realized this is exactly what would happen.  It is perhaps Trump's biggest "accomplishment", and it couldn't have happened without the cooperation of Mitch McConnell and Paul Ryan and other so-called Republican "leaders." It is now the Trump Party, with ideology and policy that changes almost hourly depending on who is the last person to talk to Trump before decisions are made (and then unmade, or contradicted, or whatever).

The Party hierarchy has made a short term expedient decision that is going to have very bad long-term consequences for the Republicans. They have destroyed their "brand" with an entire generation. The damage that is being done to our standing in the world is incalculable, and the forseeable and unforseeable consequences could reverberate for a long time.