The different election results in Iraq over the years now point to a chess game between Iran and Saudi Arabia for regional control.
Now instead of Iraq standing between the other two, it's serving as a way to create conflict where the two may eventually fight each other like the Iran-Iraq war in the 80s.
If the U.S. does not get involved in this scenario then the long term strategic outcome of the 2003 Iraq war might be seen differently. On the other hand, if Iran wins and becomes more powerful, the Iraq war will look even worse.