I agree with George Will??

Well, yes I do.  I found an editorial by Will in the Washigton Post that seemed pretty obviously correct.  So, here it is:

If Trump is nominated, the GOP must keep him out of the White House  (excerpted with comments at Media Matters)

This has been quote elsewhere, but it's worth repeating here:

"If Trump is nominated, Republicans working to purge him and his manner from public life will reap the considerable satisfaction of preserving the identity of their 162-year-old party while working to see that they forgo only four years of the enjoyment of executive power."

The thing is, "standard" (i.e., normal) Republicans know that voting for Trump is a bad idea.  But the many supporters of Trump aren't standard Republicans anymore.

And they sure aren't normal.