Well this one is going to be hard to answer shiite are the majority tribe in Iraq, somewhat they are more friendly also to the US.
Now been the sunni more clerical and the ones giving US most of the trouble, I imagine that US will care less if they vote or not.
After all because of their hostilities US wanted to skip their heavy populated areas any way.
If they are by pass in the elections I bet civil unrest between these tribes will erupt in Iraq.



