In this post-apocalyptic environment, it becomes increasingly clear why southern evangelicals would drop their requirements that a political leader who seeks their backing be one of them, ideologically or faithfully. They have different priorities now: they want an ally who will protect them, regardless of his personal ethics.

That’s why Trump has been able to peel away so many evangelicals as his supporters, despite being an unchurched secularist with three wives who couldn’t tell a communion plate from an offering basket. It is because of the increasingly large portion of evangelicals who believe the culture wars are over, and they lost.

If you’re a conservative who thinks the culture wars are over (they’re never really over, of course), then you are a lot more open to the idea of a unprincipled blowhard who promises he’s got your back on political correctness. From the perspective of the southern evangelicals I’ve spoken to in South Carolina, they don’t have any qualms about admitting that Trump is not a good Christian. They have no illusions about his unbelief. The difference is that while they believe Ted Cruz and Marco Rubio would be one more round of good soldiers for their cause, they think Donald Trump would be a tank.

Evangelicals tried for years to fight for the culture—to win the argument for their traditional views regarding marriage, family, and the value of human life. Now they want to fight on different ground: political correctness. And since Trump is the king of that—an ally who isn’t Jesus-y but says he’s with the Jesus people—he can tear off a third of that evangelical electorate without moderating any of his secularism.