On a paper of news agency Reuters stands that Sadr can count on 54 of the 329 seats that are to be given in this election. That would also mean they have to make a coalition in Parliament.
Second is the alliance of former PM Hadi al-Amiri who first fought against the US and currently against IS.
The shift of power is important because Sadr is an explicit Shia, just like Iran. It is also known that Sadr has friendly feelings for former enemy Iran.
Current PM Abadi, who won the battle against IS, was the premature winner of the election but at this moment he only stands third. The only way he can stay in power is to negotiate.
There where some incidents surrounding the elections. There was an explosion near the city of Kirkuk which killed 4 civilians.