President Adly Mansour called on the Egyptian people to take part in the two-day referendum on the constitution which began early Tuesday. Your vote is a national duty, Mansour said addressing the Egyptians in statements to the Egyptian TV after casting his vote in the referendum. The voting is not just to the constitution but to the entire roadmap as the country should have an elected president and an elected parliament as well. The people should prove to terrorism that they are not afraid to cast their votes, he added.