Iraq PM leads in early results from oil hub Basra
Basra will be at the heart of huge oilfield development projects by foreign firms.
Maliki's State of Law coalition had 219,657 votes compared to 121,497 for a fellow Shi'ite list, the Iraqi National Alliance, which has close ties to Iran.
Iraqiya, a secular, cross-sectarian alliance led by former Prime Minister Iyad Allawi, had 36,093 votes. The totals represented 63 percent of the vote in Basra province.
(Reporting by Rania El Gamal and Khalid al-Ansary; editing by Philippa Fletcher)