As president he should have owned the RNC, but didn't. That was a big re-election failing. They won't do him any favors nows. Consider the primary debates, he even claims they did not even consult him!
Yep, the four key leaders of the Republican party, all McC... do not support Trump.
Which is precisely why we need to toss the GOP onto the scrapheap of history. Just like the WHIG Party. Enough of their cheap shit.