Define middle class

[MaineMen]

3. But what do you define as middle class?

What are your opinions on who should be considered middle class? how much money? should it be calculated like that? should it be adjusted yearly? After hitting the upper class mark whatever it is, should the rate automatically go up the full 10% or be graduated?

edit: also, in the interest of intelligent debate, could you show me where you found that republicans believe small business is a corporation?
And upon hearing corporation do you automatically think huge company? does that happen when you hear other things like LLC and the like (example, small family law firm). Any size business can incorporate. I really do want to hear both sides explain their ideas from their point of view and I am trying to make a decision for this fall, living in a swing state I see a lot of ads but there's little chance for conversation. It would be a lot more helpful if you answered the post with your opinions on the questions rather than making generalizing statements about the other side.