An Egyptian woman casts her vote
Egyptians are voting on the second and final day of the country's presidential run-off election, reports Sky News.
The divisive poll pits a member of the old regime against the Islamist Muslim Brotherhood amid growing chaos in the country's transition to democracy.
More than 50 million people are eligible to vote, but turnout is expected to be low with many young secular Egyptians pledging to boycott the election or spoil their ballots in protest.
A few hundred demonstrators marched to Tahrir Square, where the 2011 revolution started, to demand a new uprising.
Ahmed Shafiq, Hosni Mubarak's last Prime Minister, cast his vote in Cairo on Saturday, where his supporters applauded his arrival at the polling station.
Shafiq, 70, is promising to restore stability to Egypt which has been gripped by 16 months of unrest since the revolution.
But his critics believe the former Air Force commander will also bring back authoritarian rule.
His opponent is the Muslim Brotherhood's Mohamed Morsi, a US-educated professor of engineering.
Speaking after he voted, Morsi said there is "no room in Egypt for the enemies of the country. There is absolutely no room for Mubarak's aides".
He said the election was for the "martyrs", referring to the more than 800 people who died in last year's revolution which brought an end to President Mubarak's three-decade rule.
The first day of voting passed largely without incident, although many Egyptians expressed dismay at the choice of candidates.
"I'm feeling bad because this is a very hard choice," one man queuing to cast his vote in Cairo said.
"This is the worst situation for the country, we don't want either of them," another man said.
The election is taking place against a backdrop of mistrust and confusion and in the absence of a new constitution that is meant to define the new president's powers.
On Thursday, a court ruled that part of the parliamentary election was unconstitutional and ordered the dissolution of the legislative body that is dominated by the Muslim Brotherhood.
The move led to accusations that the military was seeking to frustrate the transition to democracy by staging a "soft coup".
A military council has been ruling the country since Mubarak's resignation and is meant to transfer power to civilian rule by the end of the month.