Octavious, I agree that for clear cut, undeniable cases of rape, the death penalty is valid and, honestly, the only morally acceptable answer. However, it will not work as a deterrent to rapists, it will only work as a deterrent to those raped to not report it. A high percentage of rapes already go unreported, and part of the reason (in my neck of the woods at least) is that girls don't want to ruin the rapist's life, or their own social life for that matter. Rape is also already hard to prove in many cases because most rapes that are reported (again, at least in my neck of the woods) are days after the crime and so the DNA evidence has left her system. I will debate this (these?) points with you, if you like.
All that said, rapists should be, at the very least, castrated and, ideally, executed.
I won't argue with any of you on my stance about rape. It is a personal issue to me, not just some hypothetical issue that I suspect it is for most people, politicians included.