Iraqis held their most peaceful election since the fall of Saddam Hussein on Saturday, voting for provincial councils without a single major attack in a poll that demonstrated the country's dramatic security gains. US President Barack Obama hailed the poll as an important step towards Iraqis taking responsibility for their future. “I congratulate the people of Iraq on holding significant provincial elections today,” he said in a statement. “The purple fingers have returned to build Iraq,” Prime Minister Nuri Al-Maliki said after the polls closed, referring to the indelible ink stains on index fingers that show voters have cast their ballots. There was something of a holiday atmosphere in many parts of the country. In normally traffic-choked Baghdad, children took advantage of a ban on cars to play soccer in the streets. “How can we not vote? All of us here have always complained about being oppressed and not having a leader who represented us. Now is our chance,” said Basra voter Abdul Hussein Nuri. The last election in 2005 took place amid a raging Sunni insurgency and was followed by a surge in sectarian slaughter between once dominant Sunni Arabs and majority Shi'ite Muslims. That violence has dropped dramatically since 2007. Iraqi figures released on election day showed 138 civilians killed in January, the least deadly month since the invasion. Four US soldiers were killed during the month, also a record low. Maliki, who claims credit for improving security, aims to use the election to build a power base in the provinces before national polls later this year. Sunni Arab groups who boycotted the last provincial polls hope to win a share of local power. In the few reported violent incidents countrywide, mortar rounds landed in Saddam's home town of Tikrit but no one was hurt, and Iraqi troops shot one person dead and wounded another after a quarrel in Baghdad's Sadr City slum. US forces said they killed two men who turned out to be police officers during a raid in Mosul overnight. Defense Ministry spokesman Major General Mohammed Al-Askary said there were no major breaches in a massive security plan. “I consider it a great success, like a wedding.” The 140,000 US troops in Iraq had patrols on the streets and helicopters in the sky but mostly kept a low profile. Five candidates were assassinated in the run-up to the election - three just two days before the vote. But University of LondonIraq expert Toby Dodge said the democratic process itself had escaped attack.