There isn't a snowball's chance in hell any of the three options you list will happen, so I can't even vote on this with any seriousness.
If we nuke them, it'll be like nuking ourselves. The entire planet will shun us and we might as well commit mass genocide on ourselves.
Oil? Of course, but no one's going to admit to that.
I figure we'll be there for a good ten years at least
after any sort of government will be established that even remotely resembles democracy.
You need to add in your poll, "nation building" or establishing democracy. It's a fair entry, and enough people believe that is the true reason we are in Iraq.
Otherwise your poll displays some pretty shallow liberal thinking, and is completely and unfairly partisan.