Calderon Dinosaur Socialist
0.421633438 0.203790594 0.374575968
That's even better than I thought. And region #4 might narrow down a bit because most of Socialist lead there is in the Federal District (+30% AMLO) and they are ahead of the rest of region (only +6% AMLO) in counting.
The federal district has the socialist ahead by 8%, with 10% in versus 15% for the nation as a whole.