The Egyptian Socialist Party opposes discrimination based on race, gender, religion, and supports Palestine. If they were to become the dominant party in Egyptian Parliament, then they would be able to provide a strong opposition to Israel's imperialist agenda in the West Bank.
Put the Egyptian Socialist Party in Power
Currently however, after the revolution, radical Islamist parties took over a huge number of seats in the Parliament. Many of the Islamists are "Salafists", and they have called for a denunciation of secularism, as well as a return to Sharia law.
The Muslim Brotherhood is among the Islamist groups currently controlling the majority of Egyptian Parliament. In the past, they have defended the military junta and support a neo-liberal capitalist, imperialist agenda.
An Egypt ruled by the Muslim Brotherhood, or any other neo-liberal group would be a disaster, and would put the whole nation right under Washington's finger again; just like it was before.