The most essential role of the position of a vice president is to allow for a smooth transition in case the president becomes incapacitated. In many autocratic systems, presidents are afraid to appoint a vice president precisely for that reason. Palestine had not been an exception to this, until now.
The Palestinian Basic Law, a sort of temporary constitution, does not reference a position of vice president in any of its articles. Palestine’s first president, Yasser Arafat, never had a vice president, but he did anoint Mahmoud Abbas, the secretary-general of the Palestine Liberation Organization's (PLO) Executive Committee, as his No. 2.