Former International Atomic Engergy Agency( IAEA) head and contender who pulled out of the presidential race, ElBaradei was chosen to avoid any fragmentation among the opposition, details the statement.
ElBaradei will also be mediating between state institutions and all political forces to draw a map for political transition.
"We reiterate our calls to Egyptian people to join the Tuesday 'Determination' marches that will head to Al-Qobba Palace, Shura Council (parliament), Cabinet, Tahrir Square and Ittihadiya Presidential Palace," they urge in the statement, also insisting that they will remain in the streets until President Morsi leaves.
On Sunday, the Rebel campaign issued a statement giving President Mohamed Morsi until 5pm on Tuesday to step down, or the campaign would call on supporters to besiege both Ittihadiya and Qobba presidential palaces and engage in civil disobedience.
[link to english.ahram.org.eg
1 1/2 hours left to ultimatum, then the march to the Presidential Palace starts.