So Long Allawi...

... there will always be the Opposition.

More advice? Try and court the Sunnis. They are looking for a way in now, and you can provide it for them. If you tell them that their interests are your interests, you can build up support among Sunni Arabs, especially secular ones. This will help greatly in the elections in December. Also, keep on trying to woo as many members of the UIA as possible. You can never get enough to force them to include other parties in their general coalition, but you can deny them a simple majority in the Assembly. That could be helpful later.