The executive committee of the Palestine Liberation Organization (PLO) Thursday congratulated the people and leadership of Egypt for what it called the successful voting on the new constitution.It said the success of the new constitution is an essential step towards the stability and progress of Egypt, which at the end bolsters the Arab world and the Palestinian cause.The PLO called on Hamas to follow the example of Egypt and to immediately end the division to reunify the country in a pluralistic political system that would solve issues of conflict through the ballot box.