http://www.ihra.com/article/1906.html
"Historically, this division has had the highest participation rate ..."
The only reason I can see that you'd give the least number of races to the division with the highest participation is to get more guys to run the out of division races to the north and south. Roxboro has wanted a Pro-Am for awhile now, and I'd love to see Fayetteville on the schedule...