George Washington Warned Us About a Two Party Political System..

And boy, was he right.

Excerpted from his farewell address, Sept. 26, 1796, about a two party political system:
"It serves to distract the Public Councils, and enfeeble the Public Administration....agitates the Community with ill-founded jealousies and false alarms; kindles the animosity of one....against another....it opens the door to foreign influence and corruption...thus the policy and the will of one country are subjected to the policy and will of another." 
More on his address can be found at, http://www.earlyamerica.com/earlyamerica/milestones/farewell/