My favorite Heinlein government is from ‘Double Star.’ Instead of voting based on where you live, you can choose how you identify. You can be a ‘Green,’ or a ‘Gamer’ or a ‘Gun Owner’ or ‘College Educated Single Female,’ or whatever. He doesn’t give a lot of exact details but it’s a fun idea to play around with.

Also, if you like fantasy, try ‘Glory Road.’ He takes all the usual tropes and kicks them to the curb.