No, not immediately, but Santorum and the American religious right in general make no secret of their disdain for this country's founding principle of the separation of church and state, and are clearly eager to impose their religious dogma on the rest of us – see the current far-right platform issues of abortion and now birth control, for instance. They really won't stop until they can impose christian notions of morality on the entire country.

So while Santorum himself is unlikely to bring on religious-based executions even if he did become president, a vote for him is a vote that the country continue down this frightening and destructive path. Stay on that path long enough, and eventually we end up where Iran is now.