Once they have accepted their full complement of 34 MD students they will then send everyone a letter asking whether or not you would like to be on the waitlist (basically they are just trying to get rid of those that are no longer interested in Mayo). Last year this did not happen until after April 15 but last year was a slow year for application processing so I'm not sure when the waitlist offer will go out. Then they will just swap people off the waitlist as some of the original 34 decide not to attend. However, I do believe they try to match the person leaving with a similar person from the waitlist. What I mean by this is they will try to have a Minnesotan replace a Minnesotan, a URM replace a URM, etc. I cannot guarantee they do this, but I'm fairly certain this is the case. (In case you have forgetten, the other 8 students (for a total of 42) are 6 MD/PhD and 2 dentists and they are considered in a totally different application pool). Some years they only accept 33 other years 35 but they try to get it even on 34 MD students.