On the political “folly” of believing in Creationism, honestly, I’m just not convinced this is a deal-breaker on the national level. Apparently there have been multiple US presidents who have believed in Creationism:

During a 1980 press conference, presidential candidate Ronald Reagan was asked if he thought the theory of evolution should be taught in public schools.

He answered that evolution is a theory only, and it has in recent years been challenged in the world of science and is not yet believed in the scientific community to be as infallible as it once was believed. But if it was going to be taught in the schools, then I think that also the biblical theory of creation, which is not a theory but the biblical story of creation, should also be taught (Science, 1980, p. 1214).

Again, I personally disagree with Reagan here, but politically speaking, this position didn’t seem to hurt him too badly, did it?