Donald Trump now seems certain to be the Republican presidential candidate in this year's US presidential elections. That's a prospect that horrifies liberal America and quite a few other Americans besides. The former president secured overwhelming support from evangelical Christians in Iowa and New Hampshire and some commentators are speculating that we're seeing a resurgence of the so-called 'religious right'. Does he have born-again Christians to thank for his astonishing progress so far? In this episode of Holy Smoke my guest is Ryan Burge, the American political scientist whose Graphs on Religion substack is an authoritative guide to religious allegiance and voting patterns. You may be surprised by what he has to say.