In case you missed it, the new Republican watchword is "Libertarian populism," which is quickly being embraced by people who are neither libertarians nor populists. But it's a shorthand for an impossibly inane attack that Republicans are trying out, seeing if they can make any hay by charging that President Obama is only interested in helping rich people at the expense the rest of us. Okay, the rest of you, I guess, because these are Republicans we're talking about, and they're not part of that "us," but you get the idea. All of sudden, people like Paul Ryan are out there saying, "The president claims his economic agenda is for the middle class. But it's actually for the well-connected. There's no doubt that it works well for them. But for the rest of us, it's not working at all."
You can actually make an argument that Obama hasn't done enough to reverse growing inequality in this country, but it's a little hard to make that argument and then claim the answer is to cut food stamps, prevent more people from getting Medicaid, and give tax cuts to the wealthy. You see, consistency in and of itself isn't the real problem here. The problem is that economic populism actually requires you to talk about policies and how they affect people at different levels of income, which is about the last thing Republicans ever want to do.
It isn't as though they haven't tried to be populists before, but in previous incarnations, it was almost always a cultural populism, not an economic one.