The violence was the latest in months of unrelenting bloodshed, the country's worst since 2008, that has sparked concern Iraq is slipping back into the all-out sectarian war years earlier that left tens of thousands dead.
Authorities have implemented tough restrictions on movement in the capital and elsewhere, and carried out wide-ranging operations against militants, but brutal attacks have continued to hit the country.
Today, at least a dozen car bombs struck nine cities across Iraq, leaving 26 dead and more than 90 wounded.
No group immediately claimed responsibility for the violence, which largely struck mostly Shiite Muslim areas of the country. Sunni militants linked to Al-Qaeda, however, often target Iraq's Shiite majority, whom they regard as apostates.
More From This Section
In Baghdad, meanwhile, a car bomb hit the convoy of Riyadh al-Adhadh, the chief of the provincial council and a Sunni lawmaker belonging to the party of the national parliament speaker.
Adhadh was unharmed but two others, including one of his bodyguards, were killed and four were wounded.
Another car bombing at a market on the outskirts of the southern port city of Basra killed three people and wounded 15 others, officials said.
Several other attacks south of Baghdad -- in Karbala, Nasiriyah, Suweirah and Hafriyah -- as well as the predominantly Sunni cities of Abu Ghraib and Mosul left five others dead.
The latest bloodshed comes amid a months-long increase in violence, which has left more than 4,000 dead already this year, with the country grappling with a prolonged political deadlock and spillover from the civil war in neighbouring Syria.
Authorities insist a weeks-long campaign targeting militants is yielding results, claiming to have captured hundreds of alleged fighters and killed dozens more, with security forces apparently having dismantled several insurgent training camps and bomb-making sites.
But the government has faced criticism for not doing more to defuse anger in the Sunni Arab community over alleged ill-treatment at the hands of the Shiite-led authorities.
The surge in violence comes as the government grapples with a prolonged political stalemate, with no significant legislation passed since March 2010 parliamentary elections.