I'm not a Yeb! fan by any stretch, but I agree with him. The Republicans spend far too much beating on each other, and far less on policy and philosophy. The fault lies, of course, with the GOPe who figure that's how they get their designated loser by having the media report endless horse race stories of this poll and that poll along with allowing them to run the debates where they ask questions from the left and play one against the other.
Trump could not have possibly run a traditional "let's exchange our views on the issues" campaign. Basically, he has had to demean his opponents and to demean their traditional, centrist philosophies. He has had to argue that his opponents are completely unacceptable. Thus, he has called them losers, low-energy sloths, idiots, etc. They are absolutely, totally unacceptable for personal reasons that cannot be changed.
Without this strategy, Trump would be nowhere. And, most of his opponents have no idea how to respond. He has driven Jeb crazy.
That said, I would let up on Jeb for a few days, to allow him to withdraw gracefully, if he does not do well in the most favorable forum that he will have--the CNBC debate. I do not ever like to kick anyone who is down. (But he is fair game in that debate--do not misunderstand my point. The fact that the CNBC regulars have been very partial to Jeb certainly does not entitle him to be babied.)
RINO establishment have treated conservative candidates naïve enough to think they had a chance against the establishment, got their comeuppance from the USCC!
Absolutely no moral objections from Dole, W, McCain or Romney, when they were handpicked to make a run for Prez, letting the advisors smear and attack even innocent family members of families the establishment needed to remove!
That's politics in the U.S. from both parties but the GOP seems better at it, don't they.