After the last elections, which took place in 2021, a party led by influential Shia cleric Muqtada al Sadr won the largest number of seats but withdrew from negotiations to form a new government.
Speaking in a televised speech following the announcement of the initial results, Mr Sudani said: “The voter turnout is clear evidence of another success, reflected in the restoration of confidence in the political system.”
Iraq has been wrecked by violence and dominated by powerful Iran-backed militias since it was invaded by a US-led coalition in 2003.
Earlier this year, Mr Sudani travelled to London to negotiate a series of deals on the economy and diplomacy.
Speaking to Sky News during his visit, he insisted he was in control of Iraq despite the presence of armed groups using its territory to attack Israel.
He said: “We’re not embarrassed in any way, we carry out our duties to enforce the law, to maintain security and stability in Iraq and reject all means of violence. We won’t allow any side to dictate the decision between peace and war.”