The majority didn't denounce Trump. The majority said they wanted someone else.
But that doesn't matter. If Trump is at 40% at the beginning of the primaries, he'd almost certainly be the nominee.
Unfortunately, the GOP has become the GQP - a cult, not a party, that feeds of grievance and loon conspiracy theories.
It will never grow beyond that cult base, sealing its doom until the illuminati, the stonecutters and QAnon (sponsored by the KKK) join forces one day to create a national anthem of hate and they cover the land in complete and utter darkness.