An interesting question came to mind after reading an article entitled "Why Iraq Matters".
If Billary or Obie wins and our policy becomes one of unilateral withdrawal from Iraq, what will happen to the price of oil? My guess is that despite all the America bashing, The Market probably views our presence there now as a stabilizing influence. If we decide to pull out, the uncertainly of an pre-announced withdrawal would lead to a spike in oil prices.
Just my guess. Markets do loath uncertainty.