Writing in Middle East Quarterly, Barry Rubin discusses the possibilities:
"In these divisive circumstances, it is likely that the emergence of a new leader will take some years. During the interregnum, the likely outcomes would include deadlock, anarchy, or civil war.
Deadlock would mean the continuation of current policies with no one able to take any major diplomatic or political initiative.
Anarchy implies the lack of central leadership, with power held in different regions by various local authorities. Security agencies, radical opposition groups, independent Fatah militias, and other forces would work at cross-purposes. In some ways, that would not be very different from the existing situation. Gaza and the West Bank could drift apart from each other.
Civil war is the least likely option. This would mean a real battle between would-be rulers and factions for power. Palestinians have a tremendous fear of such an outcome and will do a great deal to avoid it. (Since moderation increases the likelihood of such conflict, it becomes even less attractive.)"