Egyptians will begin voting today in a two-day run-off election to choose their first freely-elected president.
Mohammed Mursi, head of the Muslim Brotherhood's Freedom and Justice Party, is up against Ahmed Shafiq, Hosni Mubarak's last prime minister.
The ruling Supreme Council of the Armed Forces has promised to hand over power to the winner by 1 July at the latest.
But the build-up to the election has been marred by a Supreme Constitutional Court decision to dissolve parliament.
On Thursday, a panel of judges - appointed by Mubarak - ruled that the law governing Egypt's first democratic elections in more than six decades was unconstitutional because party members were allowed to contest seats reserved for independents.