The latest figures indicate at least 41 people have died in attacks throughout Iraq.
At least eight bombs exploded outside Baghdad polling stations, killing at least 28 people. Seven of the bombers walked up to the voting stations on foot and one used a car bomb.
Another car bomb exploded outside the justice minister's house; one security guard was killed and four others injured.
A mortar attack on a polling station killed one woman, and wounded another and her child.
A mortar shell landed near a polling station in al-Dhubbat neighbourhood, killing and injuring some people.
A US military base north of Baquba city came under Katyusha rocket attack.
A mortar attack killed one person.
Three mortars were fired into the main airport, which is now a US army base. There were no reported casualties.
Mortars struck two voting stations. US troops killed one attacker and arrested 15 others.
Six explosions, but no reported casualties.
Tal Afar, west of Mosul
One man was wounded in fighting between Iraqis and US forces.
Al-Duluiya, 70km north of Baghdad
Attacks were reported from voting stations in the city, no reported casualties.
Al-Mahawil, 80km south of Baghdad
Five people killed and 14 wounded when a bomb tore through a bus carrying voters to a polling station.
One Iraqi civilian killed and three policemen injured in mortar attack.
Polish military sources report another incident involving an explosion aboard a bus transporting voters. Three Iraqis reported killed.
Al-Muqtadiya, 100km north of Baghdad
Two attackers blew themselves up in front of voter stations.
No citizens have voted because of poor security conditions.