Have you heard about “libertarian populism” yet? If not, you will. It will surely be touted all over the airwaves and the opinion pages by the same kind of people who assured you, a few years ago, that Representative Paul Ryan was the very model of a Serious, Honest Conservative. So let me make a helpful public service announcement: It’s bunk.

Some background: These are tough times for members of the conservative intelligentsia — those denizens of think tanks and opinion pages who dream of Republicans once again becoming “the party of ideas.” (Whether they ever were that party is another question.)

For a while, they thought they had found their wonk hero in the person of Mr. Ryan. But the famous Ryan plan turned out to be crude smoke and mirrors, and I suspect that even conservatives privately realize that its author is more huckster than visionary. So what’s the next big idea?

Enter libertarian populism. The idea here is that there exists a pool of disaffected working-class white voters who failed to turn out last year but can be mobilized again with the right kind of conservative economic program — and that this remobilization can restore the Republican Party’s electoral fortunes.