So this is where I admit that despite my best efforts, I am completely and utterly fascinated by Christine O'Donnell. More precisely, I am fascinated by the phenomenon of Christine O'Donnell.
Much has been made of this:
(If you don't want to watch, this is basically a clip of an excruciatingly earnest twentysomething O'Donnell on an MTV show talking about why she thinks masturbation is a sin.)
Now...it has been pointed out that her anti-onanist stance is not exactly the centerpiece of her platform, and that this was from 15 years ago. (She has declined to refutiate it, recently, though.) More to the point, it isn't as though she developed this particular set of beliefs out of thin air, but rather that she was/is simply subscribing to the actual doctrine of the Catholic Church to which she belongs.
Fine, fine and fine. But I still think it matters.
I would not knowingly support for office someone who professes such a belief, for the same reasons I would not knowingly support someone who really believes that the world is 6000 years old, that man was created on the 6th day of the universe's existence, that a global flood wiped out all life on earth except what was on a big boat, or that 70 virgins await you in paradise if you die killing infidels.
This isn't to say I would rule out all religious people--in this country, that's nearly everyone--because lots of people belong to faith communities and don't take all of this nonsense literally. Or even if they do, they have the good sense to keep it to themselves.
No, my problem is not with the profession of silly beliefs per se, but that it indicates a level of credulity that is just too dangerous to put in power. If you believe we don't have dinosaurs because they couldn't fit on the ark (say), then I think the odds are greater that you might believe equally absurd propositions such as "that ex-KGB guy who runs Russia seems like a good fellow", or "we will be greeted as liberators and democracy will bloom in the desert."