How do you get these maps made?That varies hugely. Anything from a few hours to a week or two, depending on whether I have ready access to data (both voting and geographical data) or need to make a spreadsheet, whether I have a base already drawn that I can just colour in or whether I have to draw a whole new one, and of course, how many different things there are to fill in.
Also, have you and/or any other people here ever considered posting your maps onto Wikipedia? It seems like Wikipedia could really benefit from having some of your maps be uploaded to it. I think that you might even be able to preserve your copyright to these maps if you really want to.