To be honest, if primary season started now (but with the expected changes in the calendar), I bet only Bush and Walker would end up winning any states.
Not sure if it'll be them, but you could certainly see just two or three candidates winning every primary next year. Four candidates winning states doesn't happen that often.
Actually, it happened in 1992, in 2004 and, if you're generous, also in 2012.
I have a feeling that the next Republican primary will be very tiring and tedious...
PS: Could you sticky the schedule thread, please?