I don't know why you got downvoted, but your assumption isn't really true. In the Nordics many of the Members of Parliament have a working-class background, suc

I don't know why you got downvoted, but your assumption isn't really true. In the Nordics many of the Members of Parliament have a working-class background, such as a nurse or a sawyer, with little personal wealth. I don't have any data to back this up, but I have a feeling people tend to vote the same class as they are, with a hope that a similar candidate is better suited to understand their concerns. A working-class member would be very, very wary of voting anyone with wealth. This is of course made possible with a true multi-party system. A businessman is a rare sight indeed within the ranks of (true) left-wing party.