The trouble with a piece like this coming from NR is that they were comparatively silent when largely liberal Republicans sought the US Presidency. Where was the symposium on John McCain's horrifying record of corruption and collusion with socialists? Where was the broadside issue against the establishment's choice of Mitt Romney as the standard bearer of "conservatism" with an Obamacare template stuffed in his right pocket?
I realize their reasoning and it is one that has to do with the orientation of the heart. This is a group of conservative intellectuals with deep ties to the New Right's rise in 1955. The other candidates tried to hide under a conservative label; clean their records up to satisfy voters with a conservative orientation. Trump, on the other hand, proposes to redefine what it means to be a conservative.
William F. Buckley and his magazine changed the dialogue on issues in the United States through a clever innovation in the tone of dialogue and political organization/mobilization. When conservatism became dominant in the 80's and early 90's, they were content to rule so much that they forgot what it means to truly be "standing athwart." How "standing athwart" was the reason why they had found so much success in earlier times.
Now they are "standing athwart" not a faux abstract dialectical construct, but a very real dump truck weighed down by Right's disenchanted. Its dark blue and on it there are five great white letters- TRUMP.
Perhaps Ted Cruz or Marco Rubio will change the truck's trajectory. Either way, all I have to say to many of the writers of my erstwhile favorite magazine is "Cannot say you weren't warned."