Alan Rapport explains #Cuckservative in the New York Times:

The phrase has caught on among a segment of disaffected Republicans, some of whom hold white nationalist ideologies and who feel many of the party’s presidential candidates are not conservative enough.
“It’s a very good shorthand meme to express a certain kind of frustration and a certain kind of contempt for mainstream conservatives,” said Richard B. Spencer, the president of the National Policy Institute, which promotes the preservation and cultivation of white culture in the United States.
The word’s popularity peaked on Twitter in July after people on the online forum 4chan promoted its use as a slur against Republicans who strayed from conservatism — and many rained praise on Donald J. Trump.
But what does the word actually mean?
Cuckservative is an amalgamation of the word cuckold — the husband of an adulterous woman — and conservative.
The implication is that mainstream Republicans, like jilted husbands, are facing humiliation and have lost sight of their futures.

Definitely one of the more level-headed reports on #cuckservative, and its relation to the Trump movement. (On the other hand, if you’d like to learn about how Donald Trump is channelling the spirit of the Nietzschean Übermensch, told from the perspective of a stupid and hysteric 12-year-old girl, then I suggest you read Matt Lewis’s latest.)

It’s worth discussing one quibble. Rapport writes,

#cuckservative is popular among those who “hold white nationalist ideologies and who feel many of the party’s presidential candidates are not conservative enough.”

“[N]ot conservative enough” sounds more like a definition of “RINO,” or just “liberal.” One important things about #cuckservative is that it breaks the standard Left-Right continuum. In other words, we don’t despise cuckservatives because they are not conservative. We despise them because they are conservative. And we’ve recognized the bankruptcy of this ideology, based on “free markets,” “values,” and “American exceptionalism.”

For more on this, here’s my essay, “What Is the American Right,” which is the introduction to the latest issue of Radix Journal—The Great Purge.