An interesting twist in the tale could be that the people, unaware that tsvangirai has pulled out, might take their courage in their hands and vote for tsvangirai anyway, in which case there may still be the possibility that he wins more votes anyway.
Unlikely I know, but possible nonetheless.
In which case Mugabes nose would be well and truly rubbed in the dirt.
After losing a rigged election, he could end up losing another rigged election in which he is the only candidate.