There is NO solid region, it's scattered across the nation. The large Southern belt all went for Romney in the 2012 selection cycle; every other state went for Odinga.
The claim of "connectivity issues" is BS. For them to ALL go down at the same time is mathematically impossible.
SeeBS is also reporting that it was a result of "disaster recovery" drills. ALSO BS. Recovery drills are conducted offline in an isolated environment, so as to avoid this very thing.
My call: this was a deliberate act, a rough-draft rehearsal. Not a full dress rehearsal, like the Boston Bombing, but a practice exercise, nonetheless.