Your opposition would legitimize the win as the will of the people. In their theology it's OK to attack the civilians of a democracy since they all participated in selecting the infidel government that attacks the Muslims and they're all equally guilty of whatever sins their government and its armed forces commit. If Obama won by acclamation, his government would look suspiciously unrepresentative to them and might cast doubts on the legitimacy of their attacks on civilian targets. So whoever wins, it's i their interests to see a hard-fought victory rather than a walk in the park.