During his failed bid for the 1980 Republican presidential nomination George H. W. Bush famously described Ronald Reagan’s “supply side” doctrine — the claim that cutting taxes on high incomes would lead to spectacular economic growth, so that tax cuts would pay for themselves — as “voodoo economic policy.” Bush was right. Even the rapid recovery from the 1981-82 recession was driven by interest-rate cuts, not tax cuts. Still, for a time the voodoo faithful claimed vindication.

The 1990s, however, were bad news for voodoo. Conservatives confidentlypredicted economic disaster after Bill Clinton’s 1993 tax hike. What happened instead was a boom that surpassed the Reagan expansion in every dimension: G.D.P., jobs, wages and family incomes.

And while there was never any admission by the usual suspects that their god had failed, it’s noteworthy that the Bush II administration — never shy about selling its policies on false pretenses — didn’t try to justify its tax cuts with extravagant claims about their economic payoff. George W. Bush’s economists didn’t believe in supply-side hype, and more important, his political handlers believed that such hype would play badly with the public. And we should also note that the Bush-era Congressional Budget Office behaved well, sticking to its nonpartisan mandate.

But now it looks as if voodoo is making a comeback. At the state level, Republican governors — and Gov. Sam Brownback of Kansas, in particular — have been going all in on tax cuts despite troubled budgets, with confident assertions that growth will solve all problems. It’s not happening, and in Kansas a rebellion by moderates may deliver the state to Democrats. But the true believers show no sign of wavering.

Meanwhile, in Congress Paul Ryan, the chairman of the House Budget Committee, is dropping broad hints that after the election he and his colleagues will do what the Bushies never did, try to push the budget office into adopting “dynamic scoring,” that is, assuming a big economic payoff from tax cuts.

I really wish the rest of us could use our votes to unelect Paul Ryan.