Carter would have to hope that the press catches news of Reagan having a Lemonparty with his cabinet in order for him to have a chance. And when I say chance I mean winning more than 40 electoral votes.
That's as bad as Goatse. You are sick, sick, sick! Does any else know what lemon party is? Should I even tell them? I think you should. ....but if that did happen, I am guessing Carter might be able to carry a few big states and a few rural D ones. Think Dukakis but maybe one more big state.
It's the internet, chances are they probably already know.
Also, I think that Carter would do somewhat better than 40 evs, just put that in there as a satirical post to the predictions on this page.