Demographics of Iraq
97% of Iraqis follow Islam: 61% Shia and 34% Sunni. 1% of these describe themselves as "Just a Muslim". According to the CIA Factbook, Shias make up 60% of population, while Sunnis 35%. Christianity accounts for 5%, and the rest practice Mandaeism, Yazidism and other religions.
January 2005 Iraqi parliamentary election
One challenge to the legitimacy of the election was the low Arab Sunni turnout, which was as low as 2% in Anbar province. Areas with mixed populations saw the vast majority of voters back Shi'ite or Kurdish parties. The largest Arab Sunni party, The Iraqis, won only 1.78% of the vote (for comparison, Arab Sunnis are thought to be 15-20% of the population).