early decision, rural med, urban med, and scholarship holders are given their first choice, and I think they are committed to staying at that campus for the entire four years (someone correct me if I am wrong on that).
The process for campus placement for everyone else seems to have always been rather ambiguous. During my interview presentation they did say that it can be dependent on when you fill out your ranking on the applicant portal, but other than that it’s rather random and dependent on capacity of each campus. Im guessing the “lottery” aspect of it just uses some type of algorithm to keep the most students at their highest ranked location as possible.
Who knows if they factor other things into it.