Trump’s bubble tells us little about the 2016 race. What it says about Republican ideology, on the other hand, is that none of the factions—the libertarians, the religious right, the Tea Party—have much life in them. After all the sound and fury of the Obama years, no quarter of the right has generated ideas or leaders that compellingly appeal even to other Republicans, let alone to anyone outside the party. The Ron Paul revolution has become a Rand Paul Thermidor. There is no philosophical insurgency this year. Instead, there’s a sense that the right is becoming a prisoner to formalism: the religious right, the libertarians, and the Tea Party are all reduced to repurposing ideas minted decades ago. The various factions’ policies aren’t generating any excitement, which leaves room for an outsize, outrageous personality, in this case Trump, to grab attention.

The field’s failure here isn’t about satisfying an appetite for novelty, it’s about the failure of new circumstances to generate fresh applications of principle from the leading figures of the different factions. From Rand Paul we should be hearing something we didn’t hear much from his father, namely how libertarianism and noninterventionism can be made politically viable—especially in the hard cases, not just the relatively popular and easy ones like surveillance reform. From Huckabee and Santorum and Carson we should be hearing about what it means to be a moral minority in a country that has already accepted same-sex marriage; they could even be talking about the Benedict Option and whether the religious right’s mode of political engagement remains an alternative to it. (Judging by the GOP race itself, Obergefell doesn’t seem to be lighting any populist fires.)