Defined in Canada in 2009-2010 to describe Conservative party supporters who blindly (like robots) support the dictums and policies of the current Conservative leadership.
These are persons who repeat catch phrases, simplistic policies without defending them with analysis or justification. They tend in droves to news web sites where they comment en masse to castigate opposing views without argument or defending their policies, using repetition and slurs to make their case.
Most Canadian Conservative cabinet ministers are Conbots. Everything for them is scripted by the Prime Minister's Office.