Christopher Buckley’s endorsement of Barack Obama in the Daily Beast last week has precipitated his departure from the magazine his father founded. (Buckley had been writing a back-page column for NR over the past few months.) Here’s how Buckley tells it:

No one has yet suggested my dear old Mum should have aborted me, but it’s pretty darned angry out there in Right Wing Land. One editor at National Review—a friend of 30 years—emailed me that he thought my opinions “cretinous.” One thoughtful correspondent, who feels that I have “betrayed”—the b-word has been much used in all this—my father and the conservative movement generally, said he plans to devote the rest of his life to getting people to cancel their subscriptions to National Review. But there was one bright spot: To those who wrote me to demand, “Cancel my subscription,” I was able to quote the title of my father’s last book, a delicious compendium of his NR “Notes and Asides”: Cancel Your Own Goddam Subscription.

Within hours of my endorsement appearing in The Daily Beast it became clear that National Review had a serious problem on its hands. So the next morning, I thought the only decent thing to do would be to offer to resign my column there. This offer was accepted—rather briskly!—by Rich Lowry, NR’s editor, and its publisher, the superb and able and fine Jack Fowler. I retain the fondest feelings for the magazine that my father founded, but I will admit to a certain sadness that an act of publishing a reasoned argument for the opposition should result in acrimony and disavowal.

Read on. NR editor Rich Lowry responds here. As my colleague Michael Brendan Dougherty remarks, after years of cozying up to the GOP, National Review has now forsaken Buckley for McCain.