With all of the back and forth finger pointing among the candidates accusing each other of "being the Washington Establishment," it seemed like a good time to really define and figure out who or what the establishment really is.
A few answers from the internet-
"The Washington Establishment is related to the democrat and republican party. They are highly entrenched in party politics as long as it furthers the agenda of either the democratic or republican party. The people involved in this deception are working hard to further the divide and rule mentality among the populous which if done correctly will continue to propagate the two party system. Any opposition to the two party system will be considered non-mainstream and ignored in terms of public debate. The Washington Establishment has largely been effective at maintaining political control because it seems to include the interests of the government as well as industry. However, the new Washington DC establishment has a difficult time dealing with those outside the corporate and two party system because they don't really have policy that includes these ideas. As a result they attempt to play lip service to such ideas hoping the public will accept a dumbed down version. Which often does not really protect their personal interest but in fact furthers the interests of the establishment. There can be no real substantive changes to the system unless they are in the interest of the Washington Establishment. As long as the main pillars of control are in place the Washington establishment is happy.