Egyptians are voting in the third round of the country's first parliamentary elections following the ousting of Hosni Mubarak.
Some 14 million voters in nine of Egypt's 27 provinces are to elect 150 members of parliament.
Balloting is taking place on Tuesday and Wednesday but is unlikely to change the outcome of the elections.
Islamist parties, including Egypt's most influential group - the Muslim Brotherhood - are expected to consolidate their gains from the first two rounds and win the majority in the 498-seat lower house.
Liberal and secular groups that led the uprising which forced Mr Mubarak from power have performed poorly in the staggered elections, which started on November 28.
One of the parliament's first tasks will be to select a 100-member panel to draft the country's new constitution.