Medical marijuana is already legal in Washington. We have a whole system set up for prescriptions and dispensaries have been around for a while now.
But what is happening in anticipation of a vote to totally legalize is remarkable-
In the properly zoned areas, not near schools for example, there are now dispensaries popping up like weeds. The main road by my house now has one every block and a half- there's at least twenty pot shops between me and Costco.