Wikistrat Simulations - The Middle Class

Over at the consultancy Wikistrat, I'm a contributing analyst. It's an intellectually stimulating to be in the sausage grinding shop with hundreds of first rate minds putting out simulations on geopolitical trends and events and the business model offers flexibility and speed that traditional consultancies simply can't match. Currently there's an internal sim going on, "Global Middle Class Values 2033" which examines how this relatively new group of $10-$100 a day earners will be transforming the world. I wonder what would happen to the Democrat political coalition if the $36,500 was the US accepted high end of the middle class?